Welcome to diving, Skaughtie, and to :sblogo:! There are quite a few Puget Sound divers who pop in here from time to time, and you may also want to have a look at nwdiveclub.com, especially if you are looking for local dive buddies.
There is a semi-regular set of dives at the Silver Cloud site at Mukilteo on Mondays -- usually one dive at 4pm and one at 6 or so, followed by a "third dive" at the brewery nearby. It's a good group of folks, and very supportive of new divers.
As far as gear goes, I think you're on the right track to look into a dry suit as soon as you can, if you want to dive this winter. Low surface temperatures are very hard on the wetsuit folks.
As far as other gear goes, one of the unfortunate facts of Puget Sound life is that we need a lot of insulation . . . so we have to carry a lot of weight. Strategies that minimize that weight and at the same time distribute it for the best balance underwater are really useful. To that end, I would highly suggest that you not purchase a BC until you have had a chance to look at a backplate setup with a stainless steel plate. (If you want to have a look at them, shoot me a PM; we could probably also arrange to meet up for a dive where you could try one out.) Backplate rigs are nice because they have no intrinsic buoyancy (so you lose about 3 lbs there) AND the plate itself is part of your ballast, thus taking five or more pounds off your weight belt.
I'm another person to vote for paddle fins. One of the salient qualities of Puget Sound dive sites is silt, and it's really great to learn, as soon as possible, how to arrange your body and do your kicks so as to leave the viz undisturbed -- after all, YOU'RE going to have to swim back through it! Paddle fins are most useful for the alternate kicks which minimize silting. And heavy fins (eg. Jet fins) are a small part of your ballast, too -- as well as being MUCH cheaper than the fancy splits and rubber-band and flexible post fins that the shops want to hawk.