That man must be 'Super Mario' from the looks of his handiwork!
You know another possibility if budget is a concern is to maybe check out an Outlaw Audio M2200 Monoblock for the VP180 and add a couple more later for the mains. My thoughts are that by taking care of the power needs of the VP180 in that system it will take a huge load off of the NAD, and the NAD will probably run the M60 mains and surrounds just fine ... only my thoughts!