I think if you are going to have one doe for meat, I think you cannot go wrong with New Zealand. My NZ doe just had her first litter at 6 1/2 months old. She had 10 babies, and nine are still alive right now 2.5 weeks later. Her mothering instincts and abilities, litter size, and her size make for a GREAT meat doe. If you want to try other things, and don't care about pure breeding, just get a buck with a standard weight of 8-10 lbs. He will likely make a good pair with your NZ. I am no expert. What I am suggesting is the route I have taken and so far keeping rabbits has been very fun/rewarding/productive.
Things are looking great so far! I would suggest a wire floor but your setup looks more than adequate and you seem ready to clean as needed. Maybe if the rabbits are getting dirty you can prop the cages up above the trays on 2x4s, instead of the trays inside. THis would still catch the waste but the rabbits couldn't lay in it. I am sure you will observe and adapt as needed.
What kind of hay did you get?