I have yet to officially weigh my jeep, but i'm fairly certain I'm in the 4500lb range with all the armor I've added. when i get a trailer it will definitely have brakes. good to know on the extended tongue. i would've thought that would be standard, but I guess you should pay attention to it. I am defiantely leaning towards the v10 Ford 450 rather than the chevy 454 setup which i've rented in the past. mileage I kinda assumed was always going to be in the 6-9mpg range. Maybe that tornado thingy only works on rv's :)
Still need my concern laid to rest with the flat towing though.