This is just my opinion and many on RCU disagree with me but it is just the way I do things.

I use thin and medium CA on all balsa and plywood airframe components no matter what part of the airframe or size of aircraft. I use Gorilla glue when glueing wing tube sockets, servo rails, balsa leading and trailing edges, tip caps and root ribs to foam wing cores and tail feather cores, and I use a thin epoxy laminating resin when gluing balsa wing and tail feather skins on foam cores. That's it.

Bob