Im in soorta the same boat.
I sold my V10 ram back in Ky. it would pull ANYTHING I ever had behind it like it wasnt back there. Fuel mileage or lack there of was another story

Ive been casually looking for a replacement out here. Would love a Cummins truck but I think no more than I ever have any kind of load or pull something with it . I have serious doubts it would ever pay for itself over a gas motor truck.
Been finding LOTS of 4.7 trucks but not a big fan of the internal water pump / timing chain deal that comes with them.
So for me its either an older 5.9 truck or hemi only depending on the year I decide on ( aka also known as what the budget will allow )