Minnesota is pretty darn flat, though there are a few river gorges here and there. Is anything as flat as Florida, lol? Oklahoma??

I can see craving four seasons (well, kind of; I really like living in Florida), but the friendliness thing is a head-scratcher to me.

The OP might consider finding an area of Florida that suits her better.

Mouse, check out Concord NH.. free parking at the bus station if you want to go to Boston/Logan. Thirty minute drive to Manchester airport. Head north one hour and you are in the White Mountains. or head east an hour if you want the ocean.

There are some charming, New England - like towns right in Florida, that you might look at:
Windermere and Winter Park.
Tarpon Springs has a really nice down town.
Maybe one of the first and finest New England towns in Florida is Mount Dora, with old New England style homes with big porches and lots of trees, not just palm trees.

Look at Tyron, NC

Suze...have you spent much time in the small farming towns east of the mountains? Because no offense meant, but you never seem to leave Seattle. My grandparents lived in a town of less than a thousand. Major freeway access in pretty much every direction. Definitely 4 seasons. Only an hour from a major airport. Everyone knew your name...and your folk's name, and your cat's name, and the name of your first boyfriend. Admittedly, I don't get the "charm" of everyone knowing your name, which is precisely why I live in Bellingham:) That's a bit of an extreme example, but WA and OR are full of towns like that.

I love the Adirondacks and don't think the roads seem bad at all in snow or sunshine. I looked recently at a map of all the gas and oil pipelines under our country and Fl didn't look so bad. Vermont is my dream retirement home. You can grow and smoke weed in Maine now. That looks good also.
Delaware, look at Milton.