Go ahead and try it yourself but believe me it is not that simple, check out the work involved it constructing the bimini
and side/rear curtains (full enclosure) including the windows, screening ,zippers,snaps and the tools required to construct and install and the cost of wasted materials while you try to "learn" how to do it two grand is cheap!
Borrow your wifes sewing machine
and try to sew on a curve..pay the money!
Been there and still doing it!