a 1/2 ton gaser will do fine for you in MI. When you wheel out of state and hit the mountains you will be wishing that you bought the grandpa F-250 7.3L
I picked up a beater diesel that did awesome for under $5g but I then went out and bought my awesome truck for a ton of money but it's super nice so . . .
I live in a hilly area and always head south through the mountains so for me it was easy to choose the Diesel and look how much money I'll save on plugs and wires over the years