I like to use 30 min epoxy around the engine and high stress areas. The majority of the plane I put together with the yellow Titebond wood glue. But I use thin CA on CA hinges.

I think 30 min epoxy is more fuel proof than 5 min epoxy.

In the engine compartment, I will mix a little Practa Enamel in with epoxy to fuel proof it in the desired color. Dries a little slower but remains fuel proof and secure.