Definitely check on the refurbs from A4L. I kind of like the Denon and Marantz right now because of the built-in BT and Airplay. They also use Audyssey, which I like. But I'm sure that the Yamaha will be awesome.
Looking at the diagram, I'd do whatever it takes to get the right front speaker some breathing room out of that corner. Distance to boundaries can be pretty important, and you're not going to have the luxury of flexible positioning after you hang the screen and projector.
Good luck! Have fun!
