Unless you think you're going to be walking/hiking a lot outside, or if you do construction, any regular water proof boots will be fine. I have a pair of Ariat work boots that I wear pretty much year round for work, and they work fine for the cold. I just wear slightly thicker socks during the winter. I mostly work inside, and limit my outside time to an hour here and there and go inside to warm up. I've had good luck with Walmart's "Ozark Trail" boots in the past for the times that I'd be outside for extended periods of time, but even then, I think my feet just sweat more than they stay warm. Luckily for me, they come in wide width sizes, if you end up needing them.

Usually I dress in layers, with a hoodie and a work coat, I grabbed a Walmart branded coat on sale a year or two ago, and that with a hoodie is my go to winter coat setup. When I get warm, I take the coat off and I'm fine. Gloves are super important to me. I lost a lot of weight recently and my hands don't stay warm like they used to. I have a pair of Milwaukee cold weather work gloves. They work rather well.

Snow tires are great, I have some General Altimax Arctic tires for my Dodge Neons that I keep on a spare set of wheels and they work great. I saw you have an SUV, if you don't do a ton of driving, I'd even look into some Mud/Snow rated tires and you'd be fine all year. Snow blowers are pretty great, but not necessary if you're pretty younger and somewhat in shape (or have kids that are helpful). Get an electric one and a long extension cord, having to take care of a winter version of a lawnmower that you might use a handful of times over 3 months is super annoying.