Will the first thing you should do before you adjust your action is to get the truss rod adjustment right. I thin kit is general accepted that buzz up to the 7 or 8th fret is sign of truss rod adjustment. Once you got that taken care of. Check to see if you need a shim at the nut or perhaps a different shim. Once that is all taken care of, set the trem angle. Then once everything else is solved you should work on the action via trem height. If you have everything else right, the action adjustment should really only effect frets higher then 7-8 for the most part. As long as you have the trem travel you want and the action is were you want it then you are probably good.