Help to set up my home theater

[Noel198]

Hi guys, im new around here, i need your wisdom and experience to help me to set up my home theater, because i don't know any thing about speakers combinations
I already bought a Sony STR-DH500 I've had it for 6 months. I was looking to upgrade my home theater ,My setup is almost done but i need your opinion guys , i need to know if i'm doing something wrong. My home theater is mainly used for DVD, Blu-Ray and Playstation 3.

Receiver: 5.1 Sony STR-DH500
Center speaker: Sony SS-CR3000
Front speakers: Sony SS-F6000 Floor Standing Speakers
Rear speakers: Sony SS-B1000
Subwoofer: i have a active Sony subwoofer model SA-WMSP75 from a Sony HT-DDW750 Home Theater System but i will change it for a JBL ES250PBK 12" subwoofer or a Polk audio PSW505 12" subwoofer.

Please guys i really need your help, let me know if i'm doing something wrong and advise me to make the best choice to buy a new subwoofer. Thanks a lot!