Hi Larry,
You've asked as question many would not admit to if in fact they had used a two part paint.
I've used 2 part/3part automotive paint and it works great, you just don't want to get it on too thick.
You really don't need the 2 part epoxy paint. Epifanes Monourethane One-Component Paint is a super paint that I have recently discovered. It tests to be very hard and it flows out like no other paint I've ever used.
Good luck,
Paul