That will do fine at 50 in the desert but to get control in that scenario you will have to use lighter valved shocks and possibly springs to absorb the bumps which won't help on curves on pavement. Deavers are great for the desert but they will limit/lower your bed load capacity which you need to fill with tools. I'd stick with a normal lift spring or small block(3" and under) and longer shackles in the rear to get some travel out of them. For the front you can use a coil over but they're expensive and would require alot of tuning to work well on the street and in the dirt. A normal lift coil/spindle/UCA system with a nice set of shocks valved properly will work well in all the aspects you want. Just don't try to pull a truck in too many directions as it will end up being expensive and not able to do much well.
Originally Posted by country2757
2002 Expedition 4wd- 5.4L, 285/75/16 Falken Wildpeak AT, factory limited slip
2000 F-150 2wd 4.2L, 5.5" front 3" rear lift, Bilstein 5100s all around, 33" General Grabber AT2, 130w KC Daylighters, Dual 4' Firestiks
1997 F-150 2wd 5.4L, coil spacers 265/75/16 BFG AT's-Sold
1968 Camaro convertible, 350,th350, white top, Corvette red with white racing stripes(still have).