Is the Asus Sabertooth Z97 Mark 2 worth it? It's not as expensive as the Maximus VII Hero, but has a longer warranty and keeps the 8+2 power phase design.
As for the case, it should fit and work fine in there as I have a full mod psu in a mini atx tower in the HP 3130 pro and it fits just fine so long as you use that 760 GTX, heck it can barely but probably fit a 780 GTX like I did.