I think if you have 6 months before you give the car to your son, waiting can only help. Get your scores up a bit so that you can get better rates. A prequal with Cap1 is a good sign that you can get approved elsewhere. I also got approved with DCU and Toyota Financial Services with a limited credit history, but our profiles and scores are different so it’s hard to compare. I’d wait a little bit, especially if you can save a little more for a down payment, which is always a plus for lenders.