Once I get my Epic 80/500

What would be my best setup?

My equipment

Harman Kardon AVR-645
Play station 3 (DVD-BlueRay player)
Digital Cable Box (HDMI)
Panasonic TH-42PX60U with 2 HDMI interface

My current setup is cable box to TV using HDMI/HDMI cable, and PS3 to TV using another HDMI/HDMI cable. The receiver is not connected yet, as I'm waiting to make my speaker order.