I took her for a quick spin last night only down the road and back. All seems ok may need to adjust the handlebar hight, they seem a little low. But Brakes and Gears all work as expected.
Bikes are not mechanically challenging, but very interesting to build up and very rewarding.
My main hobby is restoring and servicing mechanical watches, they are much the same but the set of skills is very different, you are just taking a machine apart, cleaning it and reassembling the mechanism, but on a much smaller scale.
So when I have a 40 year old watch, I need to strip it down to it's component parts, and I take a pictures of every part removed. The parts are then cleaned and reassembled in reverse order, then oiled (and you think that rohloff oil is expensive). But some of these components are minute, a simple windup watch may have 4 different screws in it. Total concentration is required and the world around you stops for a period of time, bliss.
All the best.
Peter