Making then pay for themselves is easy, making profit, a lot harder lol real profit for us comes through meat and breeders, but it costs to grow out breeders so breed only quality.
We build cages, have breeders available, babies available, offering all parts for sale when processing-ears, feet, hides, meat, organs for dog owners feeding raw diets, we sell rabbit poop bagged for gardens.
I'd say make them pay for themselves to start.
Get quality breeders. Pure bred anything sells bit better than mutts. Breed the best and eat the rest.
Decide what market to sell in.
Pets are a no-no in many areas so look up your local rules.
Meat means you'll have to process every 12 weeks as litters come in.
Raising Breeders is good money but you'll need cages (we make them cost is low for us, usually this is a big expense) and have to feed them longer.
We won't get rich! But we eat and raise them for free (except labor). We started making profit when we hit 40 breeders. Want to get 20 more breeding for a bigger profit.