the second piece that the lender can help you with, is in determining how much money you might qualify for, based on your income and outstanding debt. That would give you insight in to the price range that you would be looking at. And if you needed to rent now, I would also use the monthly payment that they are advising you on, to determine a rental payment amount as well, such that you can get your finances in the correct ratios.
In other words, I would try to keep my housing expense about 31% of my gross income, at a max, reduce my personal living expenses under 40% max, and the more 'extra' I have should be used to pay down debt and divert to investments in retirement, college funds, or the like. (I know this is more than you asked but relevant). Good luck!!
I recommend against paying a fee for the report or enrolling in a subscription. You do not even need a "trial subscription" to get your free credit report.
With your credit report (s) in hand you can show the report to prospective landlords when you see a house or duplex half you are interested in.
Most landlords understand they can't expect all tenants to have perfect credit. If the derogatory (bad) parts of the credit report are coherently explained to them, and if they feel that the bad stuff is past history and your future is bright, they are more likely to want to take a chance on you.