If it were me, I would put 4" BDS YJ springs with the full military wrap in there. it will lengthen your wheel base just a hair, plenty of room for 33's, up to 36's with some trimming, springs are very durable, decent ride quality.
edit.. you will have to change the front end from a 2" spring to a 2.5" spring, not really al that hard, some conversion shackles and just cut and weld a new rear perch on.