Lots of good adviced already. I have found that rabbits aren't as reliable as cats in using a litterbox- but usually it's the solid stuff they leave around, and unlike cat or dog poop, it's pretty innocuous. My rabbit Franz would usually piddle on newspaper if he didn't use the litterbox.
My min-rex Hans was a male, but I've gotten the impression that rexes are one of the more responsive, affectionate breeds of rabbits. You might be able to find a good home for them if you change your mind, though. Possibly the HRS chapter would be willing to put someone in your area in touch with you, if they would rather not make an hour-long trip to adopt a rabbit?
Peasant (1963-1972) and Fluffy (1970s?-1982- I think of you as 'Ambrose' now)- Your spirits outshone some humans I have known. Be happy forever.