Further limited progress.
I planned like Jim to buy a tender rather than construct it, but my favoured source, the marketplace on Shapeways, has gone, so I have built it from the kit. It is small and the structure is delicate causing lots of difficulties for older, bigger hands. The result is, shall we say, average so later I make look for a more presentable option.
I have pretty much completed sanding the hull, with one more careful check needed to make sure that all roughness has been ironed out. According to the plan, I should now slash through the hull to make spaces for the two stabilizers ("anti-sway fins"). But I would hate to do that and looking over the hull and keel I am convinced it will be stable without these additions. So, like Jim, I will exercise some licence and leave them out. I hope this does not prove to be a mistake.
So next will be the fiberglass.
I have had some difficulties with the kit. I agree with Jim's overview that what is supplied is of really good quality and the whole thing is very impressive in its detail, although of course this does make quite high demands on the builder. The kit I received seemed to omit some bits and in communication with the sender I have received some replacements. But I have also chosen to buy other materials locally (there is a superb model boat shop nearby called Float a Boat, don't know what I would do without it). It is actually quite difficult to check whether the kit is complete when it is opened. There is so much to check, and the really very comprehensive instructions and list of parts are not all that easy to understand - for example, the instructions cover both scales of kit and some parts have been re-engineered from the original version.