Newb to home theater, and was looking at starting with a 3.1 system. I was looking at the eD towers and mtm center with a a5-350. Will be running them on a denon 790. Will that be enough avr or would I need something a little more robust in the power department? Any thoughts on this setup or different suggestions please let me know. The room it is going in is very large, the floor plan of the house is an open design with cathedral ceilings so I really don't know what volume of space I have to fill. 50/30/20 HT/music/gaming.