FYI:
Lucite and Plexiglass are trade names for acrylic.
Lexan is a trade name for polycarbonate.
I've never worked with PETG, but from what I understand it is more flexible than polycarbonate, but has a lower impact rating.
If you need to glue up any of your parts, acrylic cement will work on polycarbonate. I recommend IPS Weld-on 16. Weld-on 4 is faster, but SO much harder to work with.
HTH's