If you're really short on cash, get your springs rearched at a reputible spring shop. Thay can also add an ince or so, but as you know the springs will sag back eventully.
Also, you could try to find some of the heavy-duty springs (from the factory with one extra leaf) from a salvage yard. Seems less than likey, but with so many guys buying lift kits, there may be some decent stock springs tucked away in some random places.
'82 Scrambler - NV4500/4.5" lift/33" Toyo MTs/4.0/twin stick, and my windshield washers work! Full 1/2 cab Cage
2004 Grand Limited 4.7 HO - OH Boy!
2010 Grand Laredo 5.7 Hemi - SICK - work vehicle -gone - replaced by an 08 Tahoe - nice ride.
"Both my Doberman and my Jeep can accurately be described as 'black and rust.'"
"I got a fever . . . and the only prescription is more cowbell"