Andy. Our man at the pond Iain has just finished a Trumpeter Missouri and it is a stonking build. It took him 8 months and the tiny parts you will not believe (ok, you might as you have a kit!). Is the supplied deck not good enough ?? …there would be endless drilling to do and it would have to be really really thin..
Andy, I googlrd Trumpeter Nelson wooden deck. I can see that model dockyard sell it. Others do as well. There is a youtube video showing the deck being stuck on, and other forum posts about the deck.