1971 20 SF Transom project

[Yamtt125]

Have today and tomorrow off from work, so I went to the lumber yard and picked up 2 sheets of marine ply. They charged me 92.00 per sheet. Other yards around had similar prices so i figured it wasn't too steep. Also, got all my fiberglass supplys from LBI in groton CT. I have to say, there website is very easy to understand if your a novice in buying fiberglass.

I just have a couple last minute questions before I start to lay it up....I plan on building up the outer skin with a couple layers of glass, and I would to know whether or not I have to wait for each layer to cure completely, or can I just wait an hour or so to lay the next on?
Here is my plan for the transom...

outerskin
1.5 oz mat
1708
1708
wood
1.5 oz mat
wood
1.5 oz mat
24 oz woven
1708
6oz cloth

Am I going overboard with all the layers of glass, or should I have more?....all opinions welcome. Thanks