I'm curious as to what your reasons are for wanting a land contract as opposed to just purchasing a home. If it is because of credit issues, then a word of warning, most people who offer homes up on land contract will want some sort of down payment out of you, and I would think they would probably do some sort of "prequalifying" to make sure you're a capable and worthy buyer.
Either way, good luck with the search!
Any Realtor can run a search for you, identifying all of your specific criteria. We can run searches just for homes offering land contracts alon with all your other requirements.
Give me a call if I can be of service to you.