Aside from all the (very significant) observations about the safety and adequacy of the Seawind 3000 design itself, there's also the huge issue of the commercial status of Seawind LLC. Namely, they appear to be kaput.
https://m.facebook.com/SeawindLLC/
It would be one thing to buy, say, plans for a
simple, well validated design and commit to scratch building it even if the designer is no longer around to offer support. It is a whole 'nother thing to buy a kit of an orphaned large complex composite design that has known 'issues' and a very small population of flying examples.
I wouldn't waste my time by thinking about it for one more second, and I wouldn't feel an obligation to be especially welcoming to whoever was trying to sell this thing to me. Just my opinion.