I get my
epoxy here. 1.5 gal kit to the door for a little over 100 bucks. Just about 66 bucks a gallon. I use about 25 percent less epoxy than glass when I wet out material, so it is more expensive, but not outragous. I would suggest using epoxy to stitch anything together, like stringer attachment, transoms, anything that is high load and needs alot of strength. I use regular layup glass for panels, livewells, caps, and hatches. Also, I use alot of their milled wood flour as a thickener/extender, and it works great.
As for the bracket, I will be putting an armstrong on in the next week or 2. Once I get it up and running, I will let you know what I think of the performance/etc. I threw a lot of changes in this boat over the last couple of months, hope it all plays well. If I was putting twins on, I would probably go big with the hermco, for a single 2 stroke, Armstrong or DnD.