You should consult with a mortgage specialist, as we have many Rent-To-Own clients who become lendable within 2 years after their discharge, as long as they have never been late on a bill/payment since their discharge. However, thins are unique for every person, and depending on whether you filed C7 or C11, can also vary your own circumstances.
As for your land contract, are you saying you already purchased in August 2011 land and property via a land contract? If yes, what are your contract terms? Most land contracts have a period of time in which you are required to refinance the real property (i.e., the balloon payment clause). We need to know more about the terms of your contract.
Your general questions regarding being able to borrow money will have to be determined by a mortgage specialist who knows the details of your BK and your credit history. If you are not able to get a loan in the time frame you had hoped, then yes, a land contract, or a lease-option, or some other sort of seller financing are very viable opportunities to be further explored if you still have challenged credit.