DON’T buy online. Biggest mistake you could make. The fit won’t be right, the after sales service will be non existant or take weeks, and you may wind up getting defective gear. Your local dive shop can usually put together a package that is new, inspected gear, fitted to you, adjusted and with instruction on it’s use, for the same money that you would have spent online. Support for the gear is right there, right now.
I’ve lost count of the people I know that have purchased gear online, to find it defective, just when they need it most, or as damaged, sales floor seconds.