A bear ripped the door to our shed in half. It was cheap T11-1 (?)
fiberboard. I got 5/8" B/C (?) plywood to replace it. Also got some
new 1x4" fer trim and new 2x4" for reinforcement. My question is,
should I mount all the other lumber on the door prior to hanging or
can I add the trim/etc after hanging? I'm afraid the former is the
proper answer cuz of weight, but will make one-man (me!) hanging more
difficult. Any tips?

nb