Sorry, I'm an FIV+ household, not FeLV+. While regular adult cats, with shots, have a good chance of not getting FeLV from a positive cat when living together (I did this and it worked out fine, though scary), an FIV+ cat almost certainly will. And I'm on the other side of the country, and full to the rafters with fosters. Sorry!

A rescue sounds like the best option for now, and an appeal to various organizations for funds to support his vet care. The Yahoo group for FIV cats is very active so I'm sure one for FeLV will be also.

Good luck. It certainly sounds like this cat deserves a luck break at long last.