Brian, it sounds like you have a good plan.

One additional thought. Lexan is a trade name of a type of polycarbonate plastic. As such, it's not "the only" type. What you want to use is a "hardened" surface product. You will find it to be well worth the expense. We run a door slammer race car with polycarbonate "hardened surface" windows and they look like new after several years of removing class sponsor decals and wiping off bracket ET times.

After looking at your CAD designs and finish of your roadster, I know you want it to "look nice".