Thanks MnCanary! I didn't realize you couldn't but young bucks in with older ones. Which is the sort of information I was looking for. I'll come up with some way to keep them separated. I have a small gap between the wire and the slab that I figured I'd have to cover--same with with the doors. The pen is chain link fencing which should keep out anything bigger than a weasel (which I don't think we have around here--but might). It'll be easy enough to run some chicken wire around the pen to keep the kits in.
Thanks again!
no weasels maybe, but rats are everywhere. mostly they will just steal food, but worth considering.
Were I you, I would set up half your 12x12 as a large colony space with 2-3 female littermates and then put a buck in a traditional hutch or hanging cage in the same space. He can chill on the ground with the ladies for a while (a week or 2), then take a time out, you can divide the second half of the kennel and separate the male and female weanlings at 4-6 weeks, and put boyo back with the ladies for 2 weeks. By the time your next litters are born your first littler is starting to be the size you want to harvest, and you can harvest across the next month and a half before weaning the second round.
That would be the high production option. For lower production, you could give him his own 1/4 of the kennel permanently, and have him in with the girls less often. sort the males into the second 1/4, and give the girls 1/2.
I just would not reccommend the 1/3 ac fenced pasture AT ALL. I know some people do it, but I don't think it is super wise for those just starting out with rabbits. I think you are likely to end up with a feral colony you are unable to maintain.