And I don't think there's software that will support the R-box, the antminers and the Gridseeds.
I'd use minepeon for the SHA (Bitcoin) stuff. You might have to compile your own miner program to use the R-boxes though I hear official support is in the latest build of CGminer
For the Scrypt units I'd use Minera, unless you're dead-set on dual-mining with them, in which case use hashra.
But you should get another raspberry pi. You should be able to find this for less than $30.
thanks for correcting me to SHA256 :)and your advise on minepeon
i tested rockminer on windows and it worked very well. any leads for $30 pi