I can't tell if its a 4x4 or 2x4 from the picture. If it's 4x4 crank down the bolts at the end of your torsion bars to level out the nose and then throw those 285/75/16's on there. If its 2wd then you'll need a spindle lift or leveling coils. Either way it's best to do the lift first and then the tires so you don't risk rubbing your brand new tires.
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- restored by my dad and I over 2 years.