whos the long hair?
you dont have to remove all the primer.
thats a decent kit you got.
high build 2k primer is the shizz for a nice smooth finish.
i use it on all my cars.
sand everything down good, and feel the panels with your hand.
it is a science, but you will actually feel every high and low spot.
try it!!
after you identify trouble areas, either dolly em out, hammer em in, fill em...
then sand em from the outside in, feather the edges good, then work your way in with a block.
once you cant feel the spot anymore, wet it down and look down the panel.
it will amaze you how a perfect spot is still bad. take your time, move slow and think fast. know what you wanna see when your finished.
i could type here for days on end, pick a spot and get to work.