Youve heard my opinion before, but I really like drop coils and drop leafs. Was very comfortable for me, and handled awesome - even though it was all ground force; belltech, McG, or DJM might be even better. It was firm, but never spine-shattering like everyone seems to think this setup is. At 4in in the rear i did not need a notch (althought at 5in it wouldve been a good idea), helpers werent necessary at that height, but would be nice to haul/tow, get a bit of lift, and for going lower. I never had a problem with alignment with only coils or with coils and spindles. You could go lower with shackles (5 or 6 inches) easily in the rear. Being that money is no option order some Fox or King reservoir shocks on all 4 corners for utmost comfort and driveability. Just some options - all depends on whether you want a bit of a firmer ride or you want to keep the cushy stock ride while closer to the pavement.