I am thinking about purchasing the SC-95 and would like to have 4 to 6 Atmos ceiling speakers if possible. I have never had to purchase an amplifier before and was wondering what type i would need to give me the 7.1.4 or even a 9.1.6 configuration if possible. How do these amps connect to the receivers and then which speakers are connected to them. Any advise would be greatly appreciated.The setup i have is the seating will be against the back wall which is 15 feet away from the screen.The sides are wide open with no walls.