Why not use MC home run cable
Stocking Sizes Color Codes:
Conductors 120 Volt Colors
6c black, black/silver, red, red/silver, white, white/silver
8c black, black/silver, red, red/silver, blue, blue/silver, white, white/silver
12c 3 black, 3 red, 3 blue, 3 white; each color numbered 1-3
16c 4 black, 4 red, 4 blue, 4 white; each color numbered 1-4

www.alliedtube.com/electrical-raceways/cable-systems/home-run-cable.asp