JoH/Descent question (no spoilers, please)

Descent: After the Grey Warden arc. Nothing really concrete to say about why, but it just feels like a great spot to me.
Jaws of Hakkon: After the Arbor Wilds but before the final battle. As the dialogue in the beginning of the DLC says, he was a master demon and dragon hunter so his stuff would be useful in the final fight.

Jaws of Hakkon does a great job of making itself fit depending on if you do it before or after defeating Corypheus, since a lot of dialogue changes to reflect that. 
Descent meanwhile only has one line change, and it seems to definitely fit better before defeating Corypheus.

My current PT, in JOH, has banter that don't belong.   Guys, are you sleeping? Why are still making bets?

I like to do both post-game, gives the Inquisitor something to do between defeating Cory and Trespasser.

In the case of JoH, I think it is done best after because the entire impetus for the expedition is little more than academic curiosity or the promise of loot. It seems like something best undertaken after the existential threat has passed.

I knew if I poked around I'd find a thread along this line.

I'd kicked DA and sold my copy of DAI, after the 100+ hours of its gameplay proved somewhat overwhelming (on PS4). I had completed one full playthrough at release, and made it to Skyhold with three subsequent playthroughs before giving up entirely. Spending more time on the forums, of late, has rekindled my desire to revisit the game, repetitive gameplay be damned. I wanted to get some hints as to the how to approach the three DLCs, and I believe everyone gave great, spoiler-free input here.

Many thanks.

I suspect I will try these in several different combinations, once it's all said and done. My ultimate preferences will likely come down to how party banter and conversations vary in combination with my race+relationship choices. (Solasmancer vs otherwise, for instance.)