Thinking about picking one up, thoughts opinions wanted, and does anyone know what choke threads its compatible with
I don't know anyone who owns one yet but maybe try www.Shotgunworld.com, the CZ forum if you haven't already.
My cousin has one. It is very light and uses Rem chokes. Unfortunately, his has broken a couple of parts (extractor and gas piston actuating rod), and there is no longer factory parts support for them.