put the biggest spacer u have on the shock and it should leave the arms leveled to the ground u want that allround i will jump much better and wont slap on the ground when jumping.if u get threated shocks just turn the hock collar intil the arms are level.dont turn the collar to the max the ride height will be to high and the shocks to stiff just a little at a time.soft springs will give u more grip front and rear and stiff springs in the rear will give u less grip and in the frount will give u more steering ,do softer and the rear and stiffer in the frount. soft springs will go over bumps better stiffer springs wont if the track is bumpy. if the track is smooth then run meduim springs in the rear and stiff in the frount.do u plan on changing oils in the stock .