Ok, I'll offer some advice as best I can. I didn't do the install and got the retailer to do it for me (about 2 weeks ago) but from memory it was the following. Installed a 52 " Pioneer LX-508 on wall bracket, Jamo A102HCS5 (cracking piece of kit for the money), Sky HD+, Televes Magic Eye and all rigged up to a Onkyo SR606. I am waiting for the release of the Panasonic DMP-BD55 so no Blu-ray yet.
ALL of the kit / units are in the next room on the other side of the wall in a cupboard. So all you can see is the screen and the speakers in the living room. To achieve this I've hacked the walls back and plastered and redecorated over all the cables.
For the Jamo's I've used QED Micro Bi-Wire. I was going to use QED Silver Anniversary, but as the speakers were only £190, and I needed about 35 metres in total for the install so decided the QED Micro was a lot cheaper and more suitable for the Jamo's. Plus the cable is not a thick meaning a less invasive chase into the walls.
For the connection for the Pioneer to the Onkyo I bought a 5m QED Performance 1.3a (which was just long enough). Also like Andy said have ran a optical cable from TV to Amp. Pioneer didn't come with speakers but as running it from the Jamo's there isn't a sound issue.
Oh, don't forget the cable for the sub-woofer to amp as well.
Hope this helps !