B.O.
I cook almost exclusively with a crock pot, I am a crock pot junkie:) Basically with meats, any amount(if you can fit it into the slow cooker and that the crock pot lid will fit properly), will cook completely on LOW in 8-12 hours or on HIGH in 4-6. I would just put it in before I went to bed and let it simmer on LOW overnight, and switch it to keep warm about an hour before serving time, which would make it 12 hours on the dot if you went to bed at 11pm. I would make sure that there was enough liquid in the bottom(a cup or so is all you need) to keep it from scorching.
You could also do one in the crock pot and one in the oven, just for fun:)