Are you still planning on using the Moca adapters? I use those in my home too, and find them to be pretty incredible devices. They're easily the best consumer alternative to running ethernet (compared to powerline, for example). I've been using three adapters in my condo, and they've proven enough to send HD video across ALL THREE of them. I regularly use Plex to play video off the computer on the second floor. That adapter talks to the Moca-equipped router on the first floor, which then sends the video to the Moca adapter behind the TV also on the first floor.

I've notice recently, sadly, that it looks like these adapters are disappearing fast. I'm guessing nobody knew about them, so they haven't sold well. I've been trying to hook up my customers with them.