I am starting a company making longboards and figuring out best mfg processes. There is a closed cell polyurethane foam core with cast urethane bumpers surrounding the entire rail (edges/sides). I wish to have a carbon top and bottom, both with a glossy finish. Sides will be cnc machined so no carbon will touch in the final project, however it is fine if it does still. Ideally I want production times at an absolute peak, so infusing both the top and bottom layer in one operation would be ideal. I would be okay with clearcoat sprayed for a glossy finish if that works, however one operation is of upmost importance.

Any tips or pointers for this?