I have a quick and most likely simple question for audiophiles. I have a dedicated home theater in my new house. I have been researching projectors, screens, speakers and amplifiers extensively over the last few weeks and am looking forward to getting it all set up. I have decided that, for the purposes of the room and to have a clean look, I intend to buy and run a 7.1 system consisting of the RP-280F towers for the front left and right, the RP-450c center, and the R-115SW sub. However, for the sides and rear I am going to run in-wall speakers, paint them to match the color of the walls and avoid bulky speakers to have a clean look around the sides and back of the theater room. I am looking at the R-5650-S II and the R-5650-W II for the in-wall speakers.
My questions: should I run four (4) of the R-5650-S IIs for the sides and rear? Or would it make sense to run the R-5650-W IIs in the rear left and right, and then the R-5650-S IIs on the sides? What would be the difference in the sound? Or do you recommend other in-wall speakers with the towers, center and sub?
Related question: suggested best amp for this setup? I am thinking onkyo TX-RZ900 right now, but would be curious to know if anyone suggest another. I intend to run a blu-ray player and direct tv, but that's it. Will be used for watching movies and sports.
Thank you for all of the help!