I have no experience with this,l but I have used System Three epoxy & have contacted them several times concerning their products. They have been very helpful. I also want to paint the epoxy & they helped me with that. Since you are using System Three over System Three, they can probably give just what you need. Check out their web & submit a question.

: I am going to use System Three Water Reducible Cross-linked Paint over System
: Three epoxy. How long should the paint dry before I take the kayak out and
: really use it?