Hello tica, not seen those photos before she looks nice. My interest started in 1993 when I was asked by Int Marine Modelling magazine to get a then new glass fibre hull from a company and construct from there.
I did a lot of research but when the hull arrived it was ridiculously heavy, solid with the hull 3mm thick. There was no way this could work and so I said no to the project and sold the hull to another modeller, as I had paid for the hull myself!
I think if I was making the kit up I would add at least an inch to the keel and use extra planking as I said before. I used this system to build the Amati 1 : 35 kit Endeavour, and that does sail quite well, also in IMM I think about 2004.
Regards
Roy