Well, let's see. Radiant Breath can be gotten not too far from where you already say to get jettataura, those firedrakes are pretty easy. Best camp seems to be in some ruins a little ways west of the spot you circled with the hippogryphs. There are like 4 or 5 firedrake spawns, and they respawn fast enough that you shouldn't run out if no-one else comes and kills them.
I got Filamented Hold and Frightful Roar in the Aqueducts at the same time, first room with 3 tauri has 4 or so diremites up the ladder, so switching off between spawns works pretty well.
I also got Cold Wave in the Pso'xja tower closest to the OP, but I was getting it a bit late and I'm not familiar with what Pso'Xja towers used to be what level, so that might not be the easiest camp.
That's all the info I've got off the top of my head, hope it helps.
Edit: Oh, another thing. The Addled Tumor in the Aqueducts that you list for Stinking Gas is moved a little bit. It actually now spawns right in the spot you say to pull it to. There are a bunch of level 80-some spiders where it used to be, though they don't seem to aggro.
Edited, Aug 31st 2010 2:12pm by VonCrown