+1 on not using the CA hinges,,,
as to the wing fuselage joint, consider aligning it, then tacking it with CA wherever it makes contact, then where air gaps exist, make balsa shims to fill the gap ( not forced in just a snig fit) then a drop or two of thin CA will make the bond without all the weight of epoxy to fill the gap.
You are ultimately gluing balsa to balsa to balsa, so the CA does a good job as long as you fill the gaps with balsa shims