I've done all of the above to my Trackick also a 2 door. Warn 6k winch, Calmini steel bumper and Calmini full skid plates underneath, numorous other mods. First went with OME lift via RR, OME coils and RR's spacers. Rode nice, spacers collapsed, Coils collapsed within 6 months. ARB USA was kind enough to send me a new set of coils under warr, but once again a few months later squish, lost some lift. OK, then I got a used set of Calmini 3" lift coils, worked ok for less than a year. Added spacers to them to get ride height back. Then Collapse. Got Calmini to sell me another set of their coils, figured the used ones were just clapped out. Ended up adding a .5" spacer to them as they began to collapse, then a .75" by putting two together, then a 1.25" on top of the Calmini coils. I am now in the process of modifying a set of FOA/Suspension Specialist 550lb coils to fit my rig. I guess what I'm saying is, it depends on how you drive it I think. I may be too agressive with mine, but I think ALL coils will eventually sag under the extra weight, and hard use. Just a charecteristic of IFS I think. Seriously considering going SAS when I can afford it.