Looks like you are running sufficient cabling to each location. When I wired my new addition, I kept the AC wiring as far away as possible from my Cat 5E wires, RG6, Speaker Wires and Cat 3 Phone Wires. When I had to cross the AC with the other cables, I did so at 90 degree angles. I don't know if that mattered, but I did it on the advice of others. As far as your sub, you can use speaker wire or 600 Ohm Shielded cable with RCA connectors. You did not specify the distance from your AV receiver to your sub, so maybe some one else here who knows more than me about what kind of cable would work best for your sub.
(LCD - Sony KDL -52 XBR4) (Receiver - Yamaha RX-A1040)(Blu Ray - Oppo BDP-83) (PS3)( Comcast X1) Speakers (L & R - Paradigm Studio 20) (Center -Paradigm CC-470) (Surrounds & Back Surrounds - Paradigm SA-15R in walls) (Subwoofer 1 - Sunfire HRS-12) (Subwoofer 2 - Paradigm PW-2100)