Thanks for the quick replies guys.
So it's not a big problem that there is so much filler, and not too much metal showing? You wouldn't bother trying to bang down those high spots and keep going (And risk oil canning)?
The epoxy set for about 5 days.. I then scuffed it with a red scotchbrite, and 180/220 where i could (A lot of low spots.. Hard to get the paper in there). I tried 80 but it just grabbed the epoxy and that was all she wrote.