A SOA will give you lift equal to the diameter of the axle tube + the height of the spring pack + the height of the spring perches. Usually this works out to be about 6" on stock springs. With your 3" springs, you are probably looking at 8"-9" over stock. That's going to be tough to match in the front without major mods. I would really consider going back to stock springs with the SOA, unless you are looking for a huge lift.
1990 Comanche Eliminator
2003 Wrangler Rubicon