Jeff, this is one of those cases where there are a few different ways to go. Going by the kit instructions would certainly work and as they say when all else fails follow the instructions. We could go around about the many reasons they went that way my guess would be so that you didn't need to go out and buy epoxy resin and the CA method is much faster. No matter what their reasoning was, using the epoxy will give you a stronger laminate, be easier to feather sand prior to covering and the covering will stick better. Again, you don't have to do it as I suggest but being that composites is what I do for a living when asked I feel compelled to offer advise on how to do it correctly.