Starting HT from scratch - 6k budget

Okay
I am starting a 5.1 HT setup from scratch. No cables,wires,etc. I believe that I want a new Pioneer plasma 65" zt60. Beyond that, I am not entirely sure where to go with amplification, source and speakers. I will probably wire the system with blue jean cables speaker wire and interconnects.

Speakers will be freestanding. I want a solid economical system that still very enjoyable for HT . this is HT so a decent sub is important to me - I am leaning toward rythmik subs. I have no idea what direction to go with the 5 channels, amplification or source. Bang for the buck is a must. new or used with preference going toward wicked new products or dependable used. Anyway - any input would be great

Thanks,
Brian