Trade M.Bush/M.wallace for gore?

[ASalty]

I need a RB to go with Foster and I don't have a backup but I have alot of receivers so I was wondering
1. michael bush & mike wallace for gore
2. stevie johnson & michael bush for gore
3. mike wallace for willis mcgahee

I have mike wallce, stevie johnson, garcon, hartline, miles austin.
I'd be ok ending up with just 3 of them as long as i have two other RB's to go with foster.

I'd love to get #2 and #3 to work but are any of these trades too much?