Anyone here own a F150 with the 5.4L

[chumbucket]

Sounds like you have indeed painted yourself into a corner. Wouldn't you be better off going for the F250? Not necessarily with diesel (though that is very nice), but even with the gas option you're not only going to get greater towing capacity, but also upgraded suspension, BRAKES, everything. I would think that by the time you spec out the F150 to do what you want it to, it's going to be a lot more $$$.