A couple of factors need to be mentioned here....
Is it a daily driver/Armor/Bumper/Winch/towing?
Does cost matter? If not, then go for it all
Me.....I'm fully level with it all added and went the more economical way. I can only get away with spending so much money on the truck!
Daily Driver, full steel armor front to back, steel bumper, winch, gobi rack, larger wheels, towing.
coilover kit (goes on existing TT bilsteins so you can recycle your stock shock if it's the adjustables) about $400 group buy $600 with installation
Benefit: The winch didn't go on for another 8 months, as well as other heavier items. I was able to adjust each coilover to level out the truck as necessary (so far twice) and I've had this set up for 4 years now.
Rear: Toytec superflex springs and icon shocks (springs cost I think $150, $300 with installation). Shocks were my factory, but got a set of icons for free so what could I do.