The AV505 is a nice 5 channel amp. 80 wpc with power steering. Very nice amp for driving a small HT.
The TFM 15cb are nice two channel amps. 100 wpc and you can bridge them to one channel for 280 watts of power. I have two of these in my HT. One bridged into the center and the other going into my rear speakers.
Cerwin Vegas are not the best speakers. I would stay away from them. I would need to know your budget and room size to recommend a set of speakers. Also are you going to be using as a Home Theater or 2 channel?