It all comes down to being informed and doing your due diligence. Before going the "rent to own" route, have you exhausted your other options? Do you have a family member that could cosign for you? Have you tried to execute a financial plan that would allow you to buy a home through conventional financing (maybe after a few years time)? This plan should include a strategy to improve your credit and save enough for 20% the price of the home.
Houses in the Cleveland area are at record lows. Although they may very well begin to rise, it will most likely be a slow process. 20% down on many nice homes is around 12-18k. I don't know your financial situation, but by living frugally and cutting discretionary expenses you may be able to save this amount quicker than you think.