Hi all, new to site and already hooked.

My only speaker system is a Philips sound wave 2.1 system that I thought was better than ordinary tv speakers so not much experience. Anyhows, I just bought 2 Polk audio monitor 70 floor speakers and a Polk audio cs2 center speaker. I am leaning towards a denon avr-1912 receiver and not sure on a sub to buy. I saw on the back of the monitor 70 speakers there are 4 connections.

My questions are, and I know are noobish, will I have to run 2 wires for each monitor 70, and will the denon receiver power it properly. Is there a better receiver for that price range ($550) . As far as the sub goes , I saw the Polk audio psw10 for 99 bucks, should I get something more powerfull. These speakers are going in a room about 450 square feet and well insulated.

I also plan on adding 2rear speakers that are not floor standing, and running two speakers for my backyard patio all connected to the receiver.

Any advice would be greatly appriciated.