I fostered a mama and 7 babies and it was cute for the first month or so but then they got to be A LOT of work. Be prepared for TONS of poop. Your house WILL smell with that many babies.
You don’t have to do much on the raising end besides handle them a lot so they’re social when they go up for adoption. Mama will take care of everything else. You probably won’t see her feed them, she’ll do that when it’s quiet and no one is around, usually twice a day. Mama will need unlimited alfalfa pellets and hay. You’ll see the babies start to eat the pellets and hay pretty early and you can start introducing greens at around 8 weeks.
It really is rewarding work but it IS hard and you will get tired. I wasn’t prepared for how much work it turned out to be and I wish someone would have warned me. I would have done it anyway but I wouldn’t have been taken by surprise when I needed to shop vac their pen three times a day and change their litter box every day.