First Insanity trilogy playthrough advice

Ty guys. LOL the Primes are launching the rocket drones. Had no idea and ignored the Primes

Next time I'll try to take the Primes down first. I'm impressed I made it w/ the cloak all the way to the door. That's the first time I've ever skipped content in ME - and it worked on Insanity. I just got super frustrated with the endless drones.

I think I'll keep Stasis - good CC plus that ragdoll increase in damage. I'm looking forward to ME3 soon. I've gotten fonder of it as time went on. Even the ending doesn't bug me as much. Synthesis still seems a bit odd though. Can I ask which ending makes you feel most at peace w/?

I've never been bothered by the ending, in fact I actually liked it from the beginning
Like upupaway, I like to choose all endings depending on my Shepard's personality, even though in general I prefer Destroy (because whatever happens happens and we don't need an entity watching over us and our progress).
I've not yet chosen Refuse, but want to at some point. I also want to play a Shepard that will just be shot by TIM in the final scene

I'm happy for you that you seem to get through alright I remember my first ME2 Insanity run where I barely had an idea what I was actually doing. I think I got through mostly with trial and error, but on the plus side, this run was what made me fall in love with ME combat and powers.

For the Reaper IFF, you're going to be facing armored husks in sizable groups.  An AREA power that strips armor is what's needed... and warp isn't it.  Samara is a good choice if she has Area Reave, combined with someone who has Concussive Blast (Grunt or Zaeed - Grunt being better because he also has incendiary ammo, although Zaeed does more weapon damage).  If Grunt has squad incendiary ammo, so much the better).  Thane's area throw is also OK, but I still think the concussive blast is somewhat more effective.  Jack's shockwave also works.   Samara's reave strips the armor and then the Concussive Blast (or throw or shockwave) will kill a group of husks at once. 

Your stasis will instakill single husks and it does come in very handy to CC the scions long enough to take out the husks... particularly when you're facing two scions and several husks at once.  However, you could also opt to re-spec yourself to have area reave instead.

For the final battle run, Thane and Miranda are a great combo for your squad throughout... because you're facing fewer husks (except for one section of the Long Walk), more barriers and Thane's throw can send any unprotected collectors off the platforms, which kills them outright.  Of course, who you take on the very final part really depends on who you have left alive and who is and is not loyal.  If you have everyone alive to that point and have sent a very weak squad member back with the crew, you'll be OK taking Miranda and Thane out of the "hold the line" calculation.  If you've lost some people or sent a strong squad member back with the crew, then you should consider taking at least one of the four weakest squad members on your final team (i.e. Mordin, Tali, Jack, or Kasumi).

ETA:  If you're after that secondary dialogue on the Reaper IFF missions, you can also get it with either Tali or Garrus on the mission.  Of the three that generate that dialogue, I actually would go with Tali.  If you aim her drones correctly, the husks tend to gather around the drone in a group, where you can either whittle away the armor with gunfire and follow up with a concussive blast (with Grunt) or use Samara's area reave to strip the armor off the lot of them at once (this combo works terrific with the soldier... who has concussive blast to administer the coup de gras on a group of husks after the drone/reave treatment).

I play Arrival after completing the suicide mission. Why? According to themikefest, it has one of the best scenes in the trilogy.

These are the only 3 N7 Missions I worry about doing

N7-Blood Pack Base has Heavy Weapon Ammo Upgrade
N7-Anomalous Weather has Damage Protection Upgrade
N7-Strontium Mule has Heavy Skin Weave Upgrade

To get to do Blood Pack Base, you need to first do N7-Blood Pack Communications Relay; and to do Strontium Mule, you need to first do N7-Archaelogical Dig Site (which you've already done since that's part of the Blue Sun 3-for.

None of them have a direct impact on ME3... just potentially impact the amount of mineral resources you collect if you're scanning as you go into systems to do the N7 missions.

I still can't convince you to do the mission part of LotSB, eh?

Other than that, you're good to go get that IFF.

Unless you need the XP and or credits you can skip the UNC Missions, however the Blood Pack ones have a Heavy Weapon Upgrade and the Archaeological Dig/Strontium Mule ones have a Heavy Skin Weave/Health Upgrade. 
Personally I always do those mentioned, plus I like to clear the Galaxy map of those annoying marker missions like the 'Crashing Ship' one and the 'Blue Suns Ambush' missions because I'm a little OCD like that.

As for Arrival, LotSB and Overlord it depends on you, if you want to do them for the upgrades or for "Lore" reasons, or to just get them out of the way. It's your choice.

I usually do Overlord before Horizon, LotSB before the Collector Ship and Arrival before Reaper IFF mission.  Personally I never saw the point of doing them after the game is over, but I'm weird like that.

At the end of the day, do what you like and have fun and enjoy the game how you want, because you can always replay it and do it differently.
Good luck, mang.

Ok I've done those 3 already.  I may skip the others then.  Nah, I like doing LotSB after the suicide mission.  It's mainly traditional for me, since that's how I've done it in my earlier runs.  It's wonderful, so I really look forward to it after the final suicide run, then Arrival which I also enjoy.     I guess I'm doing the DLC kinda how they released it.  I understand LotSB's usefulness to reset companion points, however.  I think I'm good tho with the choices I made so far and feel prepped for the last Collector missions.  Btw, which heavy weapon do u suggest for IFF/Suicide Run? Keep the Arc Projector?

Who should I bring for Overlord?  Tali I guess and Miranda? I have AI hacking at rank 2 as I mentioned.  Kinda been useful.  Also, should I do Squad Cyro against the Geth? I almost have rank 4 of Disruptor myself.

I like doing Arrival last since it flows well into ME3.  Man, it was hard on Hardcore last time - not looking forward to Insanity for that.  

Haha...pretty much everything you say don't do is what I did in Overlord. No heavy weapon used, Viper, and no special ammo. Had to dodge those damn geth but I was able to hack them and overload/shoot the upload thingies before they got too close to done. Then, fire away at the center armor and throw an Incinerate or 2 in there as well. Fun times!

So I'm on the Collector Base mission

Chose Legion and Garrus to handle my other teams, and I picked Miranda and Thane. Also nabbed the Arc Projector if that's good. Will commence mission tomorrow.