Most of the above depends on how low you want to go
If you want stock height & just want a smooth ride, you don't need to notch
Just run cups front and rear with your bags & you'll be good
If you want a little lower, run shorter cups up front & no cups on the rear
If you want lower then that either get lowering A-arms or build some
like I did & run a bolt in notch with lowering blocks in the rear
Past that, go to the suspension forum