Re: First minimost build.
Great looking little boat, I love that you're posting you build progress here. I didn't join iboats until after I built my break down canoe/kayak, but LOVED building it. Enjoy the time w/ your daughter building it.
My only real suggestion would be to coat everything with whatever you plan to use as a waterproofing encapsulation of the wood, except the bonding surfaces, prior to installing the cap (top) skin. Once the cap is installed, there will be many areas that will be tough, near impossible to reach and coat well with the paint, polyurethane, spar varnish, epoxy or etc... And if you can get them coated once, it is unlikely that you would be able to reach them to sand & prep for a 2nd coat. And all those areas are where water would like to hang out & penetrate the wood...
Congrats again & you're making great progress. Looking forward to seeing it splashed