RE: Time spent to build an ARF?
Hangar 9 twist went together in about 10 hours, and the bulk of that was deciding how to run the throttle linkage for a 4 stroke.
WM T-34 took about 10 hours too, but lots of pre-fab stuff.
Sportsman Aviation FW-190 took probablly 48 hours, but it was my first warbird and first four stroke, and first with retracts.
Current is a Zen 50, it's gonna take around 24-30 hours.
Andy