My room is 9' wide by 10' deep by 8' high.
Front - ( my 2 monitors will go on either side of the curtains. As well I am getting thicked curtians to hang there.

Front Right Corner

Right - 6' wide closet

Back - (what kind of DIY sound dampening should I use there?)

Back Left - Door is 32" wide

Left

Front Left - (please ignore the messy room, I am right in the middle of construction.)
My measurements using Room EQ wizard
Hope this helps you to help me. ;D
Thanks