Dad,
You need to know that people in this posts love more truck than less. You have not said how many passenger are going to travel with you, how much stuff you usually carry, and how fast you want to go. I have a 2500 gas with 4.1 rear end, which gives me a max FW of 14.000#. My FW weighs 11,500 loaded. Since the I am not in a rush and it's only my DW and I, I have no trouble moving from WI to TX for the winter earlier this month. Would a bigger truck done it better, sure but I am retired and not in a rush and it did just fine. My personal experience, better than speculation. My 2 cents.