Hi Remus -- You will love the M80s, VP180, and QS8's -- really stunning. Even with a good sub (or two) my personal experience is that the fullness of the M80 towers shines through & adds tremendously to the experience. They are delicate, accurate, dynamic, and perfectly vicious when called upon. I am also running with a receiver at the moment (Marantz SR7008), and have had no trouble. The QS8's are thrilling too -- sufficiently directional, yet enveloping. I think you are in the sweet spot of the speaker lineup, when pairing with good subs.
I'll second SN's suggestion that you prewire, i.e. plan for possible expansion with regards to, other speaker locations.
I have no experience with the other components or DIY kits mentioned, but sounds like a fun project -- good luck!
PS: Just one consideration ... Might save some serious cash on a high end Atmos receiver
here . I purchased a refurb there and could not tell from new stock.
