I think Karen and Heather have said it all.....buns should eat a lot of veggies...see the House Rabbit Society website for specifics. The amount of pellets they should have depends on their age and weight but it is usually advised to be kept to somewhere between 2 TBL and 1/4 cup/day. (pellets are heavy and can weigh down the gut, which must move constantly in order for the buns to poop...when the gut stops moving the bun develops statis... the bunnies can die quickly, so never ignore a listless acting bun. And as my vet said....pellets don't grow in the wild, are manufactured by companies who THINK they know the nutritional needs of rabbits but don't necessarily. The crude protein should = 18%. Oxbox Products sells a real nice timothy hay based pellet that much better than anything you can get from the pet stores. I think their web address is something like www.oxbow.com.
Very, very important is that they should have all they can eat of timothy hay, not alfalfa hay, which is too high in calcium.
Sorry I get wordy but I'm very concerned for every bunny's welfare since not only do I have 5 of my own (in the house) but have been a volunteer at a rabbit sanctuary for 5 years. Sometimes I think I've seen it all....at any rate it sounds like
you are moving right along with your plans for your buns. Good luck!