I have seen quite a few community channels be made and fall, and I have participated in a few so heres a few tips.
1. Do not accept everyone, There are people that are just not good at making videos and don't produce quality content and I'm sorry but they need to make quality content if they want to be in a community channel
2. Stay organized, this thread will get quite a few bites as John/Ken said, keep your members organized and keep your uploading schedule organized. Things will get hectic quickly lol.
3. Instead of taking volunteers go to slightly larger commentators (1000 or so) to see if they would like to upload maybe once every 2 weeks or so, it will bring in some viewers and maybe some of their viewers to watch your communitys things.
Hoped these helped a little bit.