sounds like an excellent deal (if they're in good condition). I use the RC-30's, they are beautiful sounding speakers. I purposely selected the RC-30's (over the RC-50's) because I live in a small 1-bedroom apartment as well. They fill the room with sound- and more.
yes, I would try to get a brand-new Yamaha RX-V2600, nothing less. If you look around you can find them between $600.00 and like $800.00. It's one of the best in it's class of receivers, and will provide you with excellent sound quality and power for stereo and multi-channel music, as well as extremely good DSP modes for movies and everything else (ie. gaming, etc.,...).
I use a Yamaha RX-V1600 (as pre-pro), along with an NAD amp (150W X 2), to drive my RC-30's, it's a great combination. These speakers love good power.
yes, it will.
excellent, some of the best I've ever seen on [any] speaker, especially for the price.