I just discovered today that this isn't possible on the 7012. For running 11 speakers, it only allows to use the pre-outs for 2 speakers on the main zone. Frustrating as I bought a 5 channel amp thinking I could power my fronts/center/surrounds with the amp, then the rest off of the AVR. I could have saved a few hundred just getting a 2 channel amp...booooo.
Btw, I dunno what happened to my previous login, I guess it got deleted at some point...