could some one plz not forget my post above? i'm still curious and i dont think i'll need the 500 grit and some rough guesses put me around 200 dollars wich comes out to $90 paint $110 supplies.
but thanks for your advise on looking at it straight on for finding imperfections i think i'll be looking all over the thing.

but i need a rought guess on how much paint to buy?
primer (rusto)

i'll remember to apply thin
rusto
and brightside