If you are looking to place the speakers recessed into the wall then I would suggest the in cabinet series of speakers with the M60/M80s and the VP180 for center duty. the QS8's will be the speaker of choice for the surrounds and pick which ever sub you want from Axiom list of the EP350/500/600/800 or one from another company like Hsu, SVS(sonicboomaudio.com in Canada), eD(elemental Designs), or Epic to name a few others.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70