Katie, see if you can take TSandM up on her offer. I bet you'd really like shooting the breeze about diving and equipment selection, and seeing how cold-water divers are all tricked out. For example:
- If you were using double Al80S in the Caribbean, you can discuss the pros and cons of sticking with them vs switching to steel tanks and eliminating the need for V-weights or a weight belt. You can get all sorts of advice about a size that works well for your height and build (eg steel 120s aren't the most optimum choice for a slightly-built and petitie female diver!).
- Different tank selection and thicker, cold-water exposure protection will necessitate fresh weight-checks and perhaps a new wing. You'll see wings from Halcyon, Dive Rite, Oxycheq, Deep Sea Supply, Apex, HOG, and others. Some divers prefer a U-shape; others a 'donut' shape. Lift capacity will be determined by tank size (plus deco bottles?), other accoutrements (can lights, manifold etc) and exposure suit thickness.
- You can stickybeak at the various regulators favored by cold-water divers. A pair of environmentally-sealed diaphragm will best suit your needs, and divers have all sorts of preferences re: manufacturer. Some considerations are serviceability, price and hose-routing but there are certainly others.
- You may wish to invest in a dive light with more oomph, given the difference between Caribbean waters and the Pacific Northwest. Can lights are very popular, and you can listen to divers exchange the pros and cons of HID vs LED vs 10 W vs 21 W. You can also see first-hand people's favored methods for carrying and stowing lights on their harnesses.
- Not sure if you favor a drysuit, but if so, you may want to play with other types of fins to get your trim sorted out. Your current fin footpockets may be too small for drysuit boots, so if you can try before you buy, do it.
If you can't make it down to Puget Sound, I'm sure the techies in your nabe are willing and able to show you the ropes. Good luck!