1. I used Behr UltraPure flat white.
Goo Systems is considered to be the cat's pajamas.
2. You might be better off converting to RGB near the equipment, and using RG-59's for RGB/HV.
3. Yes, you can get component splitters, and a lot of other distribution equipment; explore
Audio Authority, and look all around, in the pro area, too.
Larry
www.fineelectricco.com