Get the hardtop done, then go see Billy at the canvas shop on gulf beach hwy and look at the glass called EZ2CY. Its pricey, but good. Trying to modify all that framework will be costly, and you wont get it back. EZ2CY is not a soft glass like eisenglass, its stiff and clear as can be.
http://www.ez2cy.com/gallery/gallery.asp