Epoxy vs. Polyester: I dodn't rember the exact numbers, but epoxy has about twice the breaking elongation. This is a good indicator for thoughness (e.g. dragging the boat over pebbles) and the likelihood of small cracks. Also the braking elongation is lower than that of glass fibres, hence the plastics fails first and the strength of the fibres isn't used completly. Carbon and aramid will only stick to epoxy, but not to polyester. Epoxy takes less water than polyester. At all the mechanical properties of epoxy are much better.
Epoxy is more difficult to handle. You have to keep exact mixture ratios and you have to work above 10 to 5°C.
Epoxy stinks less and the styrol solvent of polyester is more dangerous to your health.
Epoxy is twice or so expensive than polyester.
Vinylester is between epoxy and polyester, in properties and price.
Wood vs. glass or carbon: indicators for lightweight materials are ratio between strength to density for parts which are tensiones (e.g. stays) squareroot of stiffness to density for parts which are prone to buckling (e.g. mast) stiffness^0.33 to density for skins which are prone to local buckling (e.g skin of the hulls)
In the attached list you will find a comparison for simple parts (e.g. skins without stringers and frames). The higher the number the better suited the matrial, if you are unconstrained in geometric dimensions.
Another important factor for the hulls is the resitance against penetration and local load introduction, which is not in this list. According to this list, the only part which should be of CFRP should be the mast, the hulls would be of wood. You would need to improve penetration resistance with a layer of glass in- and outside.
