Are you going to keep your off farm Job next year?  If so, and assuming your Tax man is using 7 year depreciation on this years purchases already (you need to know and not guess)  then I would at least sell $15,000 worth yet this year but $30,000 would be better and $50,000 would be best - resulting in the least amount of taxes owed on your corn sales. IMHO.   You do not need to show a profit on your farm if you already are showing $35K in wages because your banker will see any profits on the income statements and balance sheets.