Bandit, Aluminium is not strong enough. All the boats we put together we use 3/16 stainless steel rivets. As for the glass on the deck you should use 2 oz matt and the minimum of West System resin. The resin has no UV protection so use paint or clear to cover and protect it. The final surface should be smooth and you should not be able to see the weave of the cloth.
Good Luck
Peter