You will have to put the corn in around 15-17 if you put air on it and freeze it, then sell it in the spring. It will have to be drier if you are going to keep it over next summer.
I would see if you can get another farmer to combine, dry and deliver back to your bin. A drier and the subsequent augers are not cheap to buy or run.
I do not agree with the in bin driers doing a better job. I think they cook the corn at the bottom.