Receiver vs. processer?

I have a dedicated 2-channel system right now, but I am adding theater. Just bought a blu-ray and a plasma. Movies will be the main use, but I still have 2000 LP's and SACD's to listen to on occasion. My question is do I ditch the pre-amp (Classe) and power amp (Bel Canto Evo) for an A/V receiver or simply add a processor? Analog is an issue and I don't want to compromise my phono input too much. Are there any powered 5 channel processors out there, or am I looking at a power amp/processor combo? Any direction is greatly appreciated. Oh, and I'm not made of money, so Krell or similar high end brands are out. Thanks!