After massive amounts of mental masturbation I ordered 2 of these:
(This will be for the back wall, behind the door, and in the corner for the kit)
4 bags and frames for 4" and 2 bags and frames for 2" from here
(This will cover the 2 side reflection zones, 2 traps for behind the drum kit, and two panels for above)
Cost so far is around $1000. I still need to finish the order from real traps, but I have to call them. Real traps will be for the panel above the mixing position, and for the two traps on the mixing side wall.
I also cut the piece for the too big gap tonight, and picked up the trim for the room today. I plan to paint the trim tomorrow God willing.