RE: CA Glues, use and aplication
There will be a lot of different ways you can go and a lot of opinions, here's mine:
- You may want to consider yellow wood glue for general construction; although this will slow down your build, my opinion is that the health hazards of CA are not worth it. Do a search on CA glue and its potential health hazards. If you choose to continue using CA, make sure you use proper ventilation and stay away from the fumes - awareness of the risks will be your long-term friend. I only use CA when I am trying to harden balsa in different spots, for example hardening threads in the wood.
- For areas where there is a lot of stress (e.g. firewall, when joining wing halves or elevator/rudder assemblies, etc.) use Epoxy.
- Not sure what spray you are referring to, but if you are talking about something like the 3M spray some use them to hold the fiberglass cloth in place while they apply glue on it (e.g. when joining wing halves.) You may want to be more specific about this type of glue to get better feedback.
Welcome to the hobby!