We're finishing our basement and the ideal spot for our AV set-up is tucked around the corner. Certainly not optimized for ideal acoustics, but it gives us good flexibility with a newborn on the way and our life about to change rapidly.

Given the big void in the middle and top of the room, I'm worried about choosing speakers too small for the space, so I'm targeting this set-up:
- KEF Q650c Center
- 2 x KEF Q350 L/R's
- Denon AVR-S750H
A few questions:
- Is that a good AV to pair with those speakers?
- Do think I could get away with the smaller Q250c/150 set up in this space? I will be getting an RSL Speedwoofer 10 eventually, but if I go with the 650c/350's, it's a little outside the initial budget.
- I also looked at these options, would you recommend any of these over the KEF options?
- Monitor Audio Bronze C150/100's
- SVS Primes
- NHT C Center and C1's
Thanks in advance for any help!