Don't rule out blocks. Cheap, never sag, and maintain nice stock ride. Go at least 2.5 inches so
that the e-brake line clears under the spring pack.
Everyone always knocks a block lift, but I've been running one for 8 years, all of which included runs on the Rubicon, Fordyce, Barrett and Duzy trails.
Even the serious guys who who built trail-only buggies with 63" Chevy springs in the rear end up using blocks to give them enough lift.

Rick
1984 4Runner