Two words for you and your wife DIVE RITE. Look into a trans pac II with a Venture Wing and you both can’t go wrong, you’ll be able to size them to any way you want and it’s a rig that can grow with you as you progress with diving. You simply won’t be able to out grow it’s usefullness, even people who dive doubles will use the same trans pac they use for singles. You can buy it in a store, there are lots of retailers, or order from Dive Rite Express (fill express) in FL. Dive Rite also has some of the best customer service for any equipment related problems you may have. Best Bang for the buck that I can think of for a new diver with fitment issues.