acoustic treatment for tracking rooms

[pandamonk]

Ok, i know how to treat a control room etc, but what about a tracking room?I know bass traps is a must basically(in a small room), a cloud and broadband absorbers. This subject never seems to be looked at. My tracking rooms are 6 1/2'x7 1/2', 2'x9', and 9'x6'. I know it'd be better to just have one tracking room, but that's not possible with what i have(bombshelter with 2'x9' walkway[now vocal booth], and 9'x5'[drum booth], and shed split into 2 rooms). Ok these room are too small for reflections to be useful, but i can't afford to just cover the walls completely, so how much treatment would be sufficient for the rooms to sound ok. I was thinking of bass traps in all corners of drum booth and shed tracking room, 2 4'x2' clouds and randomly placed 2'x2' broadband absorbers. I also hav a lot of 1-2" egg crate foam, which i wanna use(not sure if it's a good idea though) in the drum booth. I really don't know how about tracking rooms though. If you need more info just ask.

[pandamonk]

I was thinking something like this(attached pic)

[Tonio]

Looks like a good start PM.
T