Its not too bad if you trim down your items to what is really needed and take full advantage of your carry on. Your regs are one of the heaver items and you should carry them on board along with any other expensive/hard to replace item. Buying a travel BC of some sort can save a fair amount weight, some of the more ....fancy.... for lack of a better word...BCs can weight up to 9 lbs, a good travel BC comes in at 4 lbs or less. Avoid heavy suit cases, each pound your suit case it, that is a pound less you have to work with. While on the subject, avoid the urge to mark the suit case with dive related items...dive stickers, DAN tags and the like. If you do, you just put a sign on the bag saying "expensive dive equipment inside, please steal it". Drop by a sporting goods department and buy a 50 lb fishing scale. These are great for weighing the bags and making sure they are within the weight limit. Unless absolutely necessary, I limit my bags to 45lbs to avoid a weight dispute.......and one last item, tell your wife that buying large ceramic figures for Christmas presents is not allowed.....