Poco Barco - Jim Michalak's Toto Kayak

This is my first build and I am attempting a Toto double paddle canoe/kayak.  I have opted for 1/4" ply Aquatek as a base which should be good for years to come.  I have opted to use fiberglass resign in lieu of epoxy for budget reasons.  Reading the differences between the resins, I know epoxy is much better but I believe it will hold up for what I plan to use it for.

The gunwhales are made of red cedar.  I simply ran them on a table saw out of a 2x4 from my local buidling supply store.  Brass screws here and there.  A few pine blocks to hold the vertical interior dividers.

Any thoughts on my choice of material?  Does it look ok?

 I am planning on putting an outer coat of Spar Urethane (maybe three coats) for added protection.  Is this a good idea?