If I had to pick two I would pick 15 minute epoxy and medium CA. I use CA for most everything except major intersections like around the firewall, landing gear block, gluing the stabs in etc... All of the stick joints I glue with Medium CA and I havent had a failure. Some guys use elmers glue and 30 minute epoxy. I dont think you gain anything with anything slower than what I suggested but some guys like to build the old fashioned way and that is okay by me.
Some guys like to build and nice and slow...
I prefer to build slowly enough to get a good solid airframe, but fast enough to get in the air as quickly as reasonably possible...

Mike