trying to find the ideal suspension setup

[jokerjustin]

just like the title says im trying to get the best of both worlds.. i have already lowered and stiffened up my suspension.. the front drive shafts are level and the rear is a bit higher than level... im running 70wt oil in all shocks and im happy with the way it drives.. except for when i hit a decent jump the rear tends to bottom out hard..

im using blue springs with the preload maxed.. should i up the oil or get stiffer springs? i just dont want to go to high in oil and lose my driveability