CA glue is pretty much instaneous glue. It effectively fuses two pieces of wood together. Its pretty strong stuff, and if you get any of it on your fingers, you're in trouble! This glue was first used to join skin together, so be extremely careful with it. It's used in construction of fuselages, wing ribs etc in kit planes. In ARF its used pretty much for CA hinges, hardening of holes for screws. But, and this is a big but, it is NOT used for joining wings together. Use expoxy on any wing joining you do. Epoxy is mixed 50/50 as you said, it takes varying times to go off, there is 5min, 12min, 30min expoxies. The longer it takes to cure the stronger the join. Hence, use 30min expoxy for joining wings together.
Hope that helps.