Dont overthink it. I built the same hull several years back. G10 or Garolite is PLENTY strong. KISS principle works for everything in rc subs. If the deck is in 2 or 3 parts with a couple hold down locations, you will have no problem. Also, with the longer boats, a nice stand that supports the keel and hull will keep it from moving. With the money you save, you could have a photoetched deck designed and cut.
My model was a 3 piece. large center area for the tower and two 16" sections at the bow and stern. When it was bolted down, everything locked together.
Darrin
My model was a 3 piece. large center area for the tower and two 16" sections at the bow and stern. When it was bolted down, everything locked together.
Darrin






Comment