Here's what I would do now. If you only have epoxy on do the filler work over that. Maybe hit the areas you know would need filler with 40-80 grit. Sand smooth with 80 then 120-180. If still in the 72 hr window, put 3 coats of 2k fill primer. If not hit entire hood with red scotchbrite the 2k primer. Block sand with 180 and do any glaze work. hit with 2 more coats fill primer and block sand with 220 then 320 then 400. Once satisfied, epoxy prime with a slightly thinned epoxy and wait 1-2 hrs and paint