Be careful! Land contract is one of the difficult and dangerous modes in the real estate transaction.
I am from California, the law and real estate pioneer state in this country. Agents here who handle land contracts, always talk with their attorneies or ask them to involve in the case especially in the first 5 or 10 cases.
I do not think I can help you in any particular question or transaction as we are not from same state. If you still have any general question, I would like to share the concepts and principle with you.