I know it may seem daunting and maybe not for everyone, but we started with a compost toilet when we moved to our (raw) land, and now will continue even as we finally move into our new home. At this point we have no desire to deal with septic.
Compost toilets can be purchased, or simple ones can be made, and the whole system is easy, and depending on the regulations in your area, grey water is generally fairly simple to deal with as well.
Anyway- good luck with all the repairs, Maria! And I hope you solve the bunny question.