Sketchup of my room, bass traps?

This is what I am considering doing with my room. Everything is not final (guitar amps, etc) but I want to know if the treatment is placed correctly. I decided to go superchunks for corners but I might end up putting regular panels (SCA (studiotips corner absorbers)). I decided to put no treatment on the ceiling. Should I consider some wall-ceiling treatment (of corners) or just a cloud? here is the link to the file: (file was too big for the server here) http://www.studiolue.com/upload/room.zip Thanks (edited the link)

Tenkas, Do the cloud. Go here http://www.jhbrandt.net/pubs.htmland get my First Reflection Calculator for help with panel placement. Cheers, John

thanks John, I guess I will try a cloud. Probably will be 2 panels at the reflexion point of mixing. Is that what you would recommend? Found your calculator and it will be of great help. I noticed my sketchup is not precise.

Yes, a nice big absorptive ceiling over the mix position is always good. Cheers, John