Perhaps the most important thing will be your market for them? Sure plenty of people will try it once, but selling the meat over a period of time to re-coup your investment might be a problem?
Something we see infrequently here now. Even our specialist butcher doesn't stock much, so it seems to have gone out of fashion in the last 10 years. Any meat here is now very expensive, except for pork. Chickens are all free-range and command €12/Kg- same price as beef, but you pay for the chicken bones as well, so it works out very expensive and I expect rabbit to be even more?