[tartuffe]

I used marine grade Baltic birch, it was some high dollar stuff but all of those you mention are all quality products from my research but I have not used them. Sounds like you are on the right track.

So do you plan to save the cap or are you going to transform her into a center console?

I used 1/2" divynicell foam for my floor core and hatches. Really great stuff to work with. May want to research those foam cores and consider them for your deck. My hatches alone weighed 80 lbs before the recore and 33 lbs after and solid as a rock.