It sounds like the general concensus is to mix and match all the best parts, OME coils and shocks, Currie control arms, etc. By doing this do you risk messing with the geometry too much though? I would have thought that if you buy a completed lift/suspension kit from one company it would work better together as it was designed to complement each individual part and its main function... Is this a naive belief to have?
Not naive, that just isnt how it works.
Most suspensions in the form of "kits" take significant short cuts and leave out key components in order to maintain profit margins.
The closest thing you will ever find to complete suspension is a full currie 4" system, but to an experienced builder that lift is actually taller then whats ideal.
I build several complete bottom up dual purpose TJ's per year. The best results I've had, and the recipe I have stuck to for 5 TJ's has been as follows.
Springs OME ZJ/LJ combo (nets just under 3" of lift)
Currei hd front trackbar (TJJ)
bilstein 5100, or ome shocks (prefer bilstein due to better valving and packaging)
JKS 1.25" body lift w/1"mml
Currie hd steering
Currie johnny jointed control arms, custom built with heavy wall tubing
Swaylock front swaybar
Currie antirock rear sway bar
Genrite rear shock outboard kit
Everything is doable in stages and all the components are the absolute best of the best and ultra low maintenance. The end result is a short arm TJ that will articulate with a longarmed rig, drive down the road with 1 finger at 70mph, ride better then stock, and corner like a car.
I've been building TJ for myself and others for 10 years. If someone finds me a better dual purpose recipe then this, I am all ears.