I'd go for a 10-speed drivetrain with Dura Ace bar end shifters. As far as the gearing goes a lot of that is dependent on how strong you are. 11-32 in back with a 50/34 in front is plenty low enough for me, and since your Paramount frame is not likely to be designed well for carrying a load, I wouldn't worry that much about going a lot lower than that. I know that like "sub-compact" doubles exist for 46/30 up front if you do feel like you need to go lower.