2.5 inch OME lift for ride comfort and flex.
1/2 inch lift booms
1 inch body lift
That's 4 inches of comfortable riding lift. If you want less lift, leave off the 1" body lift.
4 inch lift spring will be arched more and more arch usually means a stiffer ride.
If you don't care about a stiff ride, 4" lift springs will be cheaper.
Ban computer updates, auto-play video and music without real instruments.