If you are going to join the root ends of each wing panel then no you cannot use CA glue for that you will need 20 or 30 minute epoxy. But if you are just building the wing as in laying and pinning the spar to the building table and then setting the ribs on the spars well this is where you can either use elmers wood glue or CA this is purely for which one you choose to use but either glue is fine. The other builders speak of "brittle glue joints" well I have no idea what they are talking about, yes CA glue goes into the pours of the wood this is how CA "kicks off and cures" and builds the strong joint between the two joined wood pieces. I have a Great Planes Ultra Sport 60 that I built back in 1991 still in my hangar in flying condition and was built from CA medium viscosity for glue joints and thin viscosity for the CA hinges and epoxy for the firewall, wing root and wing joiner and tail feather. I can only suggest that you follow the build manual and follow its "glue type directions" to get you the proper glue for the area of things to be glued. Good Luck. If you like inbox me with a picture of what you are working on and I can help with your glue question.