Are you set on buying a suspension lift "kit"?
If not you could go with Jeep Grand Cherokee coils for $20+ from a wrecking yard.
Call up Rough Country and order some Upper Control Arms (same as Superlift units). Tell them that you need UCA for a “Hard Body” (they are the same as Pathfinder UCA’s). Those have been had for under $130.
Here is a topic covering these UCA's
Order the Shocks from A/C ($290 unless a better price can be found) and if you need or just want to replace the Torsion Bars ($190). Torsion Bars bace been talked about in the past and it's been recommened that yuo simply reindex your stock ones first. Then if that does not work (they are worn to much) buy replacements.
So that puts you in the area of…
$420 + the cost of the springs w/o the Torsion bars
$610 + the cost of the springs with the Torsion bars
That saves you around $200-$400 and you get better quality UCA’s
Now you have money left over for a Body Lift, Rack, etc.
Also, remember that you are going to need an alignment after the lift.
Search around here some and you will find a lot of information covering these options
Others will chime in on this, so wait and see what everyone suggests