Well, the plans arrived a few weeks ago. Meranti plywood was picked up Thursday from CrossCut Lumber in Seattle. I had originally looked at Edensaw in Tacoma & Port Townsend. However, the weekday only hours at their Tacoma location and my regular 8-5/6pm job made it just about impossible to get down to their place. Maybe next time because they seem like a quality outfit.
A recommendation led me to Crosscut in Seattle. Tryg at Crosscut matched the quote I got from Edensaw and saved me a good couple of driving hours in I-5 traffic. Also, he was prompt with replies to questions and order status. Good service is awesome.
System Three Resin kit arrived from Bateau on Friday (with a very quiet knock from the UPS driver).
Here is what my son and I are shooting for:

Spent Friday night measuring, drawing, making fair curves and what not on the plywood. And, boy are some of those pieces/panels nested tight! Still everything measured out just as it should. Good details and plan instructions. I think the sheet length was a half inch over 8-feet so we got small amount of wiggle room.
Put together a rolling dolly that fits an old folding table. It will let us regain that side of the garage by moving everything to the back of the double deep bay.

Taped plans to cardboard for easy and quick reference (and so we wouldn't lose them)

Hydrotek from Crosscut

Drawing the nested pieces.

Nails & PVC for curve batten


Oldest boy and his buddy inspecting things

Today saw lot of sawdust. After a late night of drawing the frames & what not on the plywood, we got after it good.

We got all the pieces cut. It took some courage to make those first cuts, along with some pre-planning on which cuts to make first. The thicker pieces actually seem to go easier than the thin stuff. I had to keep telling myself to take my time and go slow. And a great lesson is to never toss out or burn any scraps over 6 inches of lumber leftover. A few 1x3, 1x4 pieces worked great for spaces to lift the plywood sheets off the floor and support other areas of the sheet. Overall, everything looks good.
Bottom panels

The amount of dust was amazing and very fine. Very glad we wore particle masks. Both have the telltale markings on them. Also swept and vacuumed up between working on each sheet. Even then, after all picked up, converted the shopvac to a blower and blew out the fine coating that seemed to be on everything. Can’t wait for what sanding will do.
Now I need to stop by Home Depot to pick up some more battens for framing the seat frames. We will try to get those cut first thing tomorrow and spend the morning gluing those and blocks on the side panels and bottom pieces.