I’ve done prime rib both ways and reverse sear (low cook temp, rest, 500 for 10 min to brown) resulted in a much less gray banding. My stepdad did 500*X min for years and it’s still good, you just get more uniformly cooked meat with reverse sear.

Honestly with using high build filler primer it was pretty easy. Really just sanding the primer down to get it even. Did 2 initial coats, little wet sanding to see how it looked, then a 3rd coat and a bit more wet sanding.

Side view

Kind of looks like a dollar store Zack Morris.