I'm not familiar with Proset, I got out of the composites biz (making Swift race cars and some composite F-1, F3E, and Q-500 R/C models) before the resin injection method came along.

There might be better resins now, not sure. EZ-Lam is really intended for traditional wet layup/vac-bag methods. In my experience it can also be thinned quite a bit with isopropyl alcohol and since it is a faily low exothermic cure, it won't boil off and leave voids.

You may want to call George at ACP, he can give you specifics...

Barry