NAD generally sounds good and this one has twice the power of the HK. I'd probably use it and power the two pair of Advents, stacked, top inverted, jumpered + to + and - to - providing a 4Ω load to the amp. Put this stack on a ~10" stand and enjoy a true high quality sounding speaker system while you sell off the rest and look for a nice bigger amp if you need that extra volume. I'd use the 330B and the S32s in a separate system. If it has to be the same room, maybe even run a tape out from one unit to the tape in on the other and play em all at the same time to see what mixing and matching can do.
But that stacked advent choice stands out as the go to system with your list of gear.