I have a 16" Samsonite X-Space roll-on. It fits everything but fins. all under size and weight restrictions.
I would NEVER check my regs and computers. Most airports have seen plenty of scuba,
as-long-as you dont leave your dive knife in your BCD you will sail right through security and customs.
Try to get to dive The Devil’s Throat and Cedral, both advanced dives. You need to be on your game to drift
Cedral, the current is FAST. If any thing go a pound or two heavy on weight.
I did some reseach and found some terrible review for PRO DIVE, I dove with Scorpio Divers out of Cancun,
They are the best!