I don't have the experience of many others here but I did what you are doing two years ago and I'll give you my comments. The boat had a West barrier coat from about 8 years ago (by a PO). I removed some of it and applied 2 coats of Interprotect. I liked the way it mixed and went on. I also liked the color (I used white). I was able to get it discounted. I did little fairing but what I did, I used MAS. I like West products but the MAS is easier to mix in small quantities since it is a 2 to 1 ratio (no pumps, etc.). I did use an Interlux paint but I find it hard to believe the brand of epoxy, barrier coat, and paint makes much of a difference. I feel for the work you have done - especially if you did it yourself - like I did. I have been happy with the results.