I think your best choice would be to start very small, keep lots of records and grow into it. Maybe plan for your first litter when weather is warm and there are lots of wild foraged edibles available to help with feed, keep several bales of hay on hand, and grain if you are feeding that. See how they do, change up according to the season and what is available (slowly so you don’t upset their digestive system), and what foods they prefer. Food preferences change constantly according to how much they need certain minerals in those foods. Remember variety is key. Not too much of any one thing, except hay free choice. If they waste hay, change the type feeder you put it in and do lots of research. Also you can try putting out a half portion at a time and adding more as they eat it. We use bowls for water as they cannot always get enough out of the bottles and those tend to go awry a lot anyway. This year a baby got its feet wet in the water bowl and froze to death during the night due to being too cold. So now I take the water out at night or in really cold weather and if freezing, bring slightly warm water to them twice a day, then remove the bowl. I also put less water in when there are babies so they don’t have so many accidents or fall into water and drown. You can use a shallow bowl and put a rock in the center so they can’t climb into water, much like people do with baby chicks absent a commercial type watering device.
Most rabbit pellets have soy as the primary protein source, which I prefer to avoid as it is always GMO and has too much estrogen. They also have alfalfa, corn, grain byproducts, a little molasses, and some vitamins/minerals added. I use dried kudzu, honey locust when I can get it, clover, trefoil, as a protein source, and they get sunflower seed for both protein and vitamin E and minerals. The winter squash seeds are high protein and high in zinc and other things good for them. So pick a system that will work in your area and with your available feedstuffs and jump in. Nothing is carved in stone, be flexible enough to change it up when they are not thriving or growing as fast as you’d like them to.
Good luck with your endeavors!