If you want it when you arrive then carry it, Note that luggage can take many days to catch up with you at a dive destination. Flamingo International is no O'Hare
Put your laptop in a laptop case and it will board as you personal item. Put your regulator, computer and mask into your carry on luggage piece. If you remove the regulator from the regulator bag you can lay the regulator in near the bottom of the carry on with freely routed hoses and pack soft items around it all. This way it packs very efficiently If you want the regulator bag at the destination then put it in your checked luggage since it is not essential.
Ideally you pack that carry on as a mini survival case with critical dive items, clothes for a day or 2 and essential toiletries
Pete
Put your laptop in a laptop case and it will board as you personal item. Put your regulator, computer and mask into your carry on luggage piece. If you remove the regulator from the regulator bag you can lay the regulator in near the bottom of the carry on with freely routed hoses and pack soft items around it all. This way it packs very efficiently If you want the regulator bag at the destination then put it in your checked luggage since it is not essential.
Ideally you pack that carry on as a mini survival case with critical dive items, clothes for a day or 2 and essential toiletries
Pete