Well I'm not as fast at building as you guys. Here are some estimates:
1. Cutting wing cores - one hour to shape blanks, set up cutter, and make a set. Subsequent sets once set up about 10 minutes each. Templates take the longest amount of time but only need to be made once.
2. Making up fuel tanks, drilling motor mounts, installing horns, installing servos, batteries and connectors about three hours per plane.
3. Building wing - gluing in rods, sanding glue ooze off, covering, hinging ailerons, and servo installation with pushrod make up - about five hours
4. Fuselage (CNC router cut Bandit), one hour

Thats about 10 hours or three to four nights per plane. Multiple planes built at same time go faster.

Scale planes, scratch built from own design 30 hours plus each. Scale planes built from RSKits 20-30 hours each depending on finish.

Also have to factor in engine repairs from dirt naps, servo rebuilding from crashes, and repairs to planes after contests.

Thats about as fast as I can go.