Queries about buying a Steelworxx Revenge

Hi all! I’ve been eyeing up a Steelworxx Revenge for quite a while and I’d appreciate it if someone here could answer some specific questions for me. Up to now, the only piece of chastity gear I’ve used is the CB6000s. I’ve been searching online but haven’t had much luck finding out what the lower distance between the A ring and the tube actually is (my old CB6000s are gone). Does anyone know this? My main concern is that the Revenge has a 15 mm gap there, and back when I wore my CB while flaccid, I could often wiggle free with enough manipulation. If I can lower that distance slightly, it should be harder to escape. Also, does anyone know if a device using an external padlock creates a noticeably bigger bulge compared to one with a built-in lock? Personally, the idea of wearing my girlfriend’s name on a pink padlock is very appealing in case I ever get up the nerve to bring it up with her. So mentally I lean towards integrated, but physically I prefer the look of a padlock… It’s not easy making an ‘unemotional’ purchase given the cost.