300g biax would probably work well on the bulkheads and also the inside of the hull and parts of the underside of the deck. you could use it in areas that you would normally plan on using two layers of 200gsm woven.
The lack of crimp in the fibers would give good stiffness, however it would not be so good for impacts. I would want to vac it, as I have found biax difficult to wet out and consolidate.