Creaks could be any random bush. Try a local Pedders to have a look....they used to do inspection report for $22 or something (hopefully still do it). But if they charge hourly rates, then find a good suspension shop. Replacing suspension wont hurt....if you can stretch more....buy bilstein or koni shocks. Also research that price...cause I saw monroe + springs for $600 odd on ebay back in the day. If you want the rear slightly lower than fronts, you will need SSL fronts and SSSL rears. And sometimes SSL all round can look level, but sometimes it doesnt (kinda weird when I've looked at other peoples pics).