I recently purchased the completed form for a Guillemont from a previous builder. This seemed like the best way for me to get my feet wet(pun intended) for building my first strip kayak. The one difference is he had shortened the design from 17' to 16'9". Is there any loss in displacement with this shortened design? I am 5'11" and 175 lbs. I intend to use this boat for short trips - probably no more than a few days in Lake Superior. Would it be seaworthy on a large lake as Superior?