Most of what you're looking for in N. Idaho. Maybe not 300 days of sunshine, but definitely get seasons.
GA airport in Hayden is small, but growing. Spokane INTL will get you anywhere you need to go.
Recreation not far away. Great fishing on local lakes and rivers.
Real estate is going up again, local construction is busy, new housing being built, prices going up, but you could still get a great place with a few acres within your budget especially on the outskirts/outside of towns.
Lots of retired LEO/First responder/.mil up here. Overall very conservative population.
There are some really fantastic areas outside of the towns that would be great to live at.
Downsides: CdA/Rathdrum/Post Falls/Sandpoint areas are growing rapidly. Lots of out of state city type folks moving in from all over. Some folks from out of state move to Idaho then try to make it like the place they came from.
Traffic can be bad as infrastructure was never built up for rapid population growth. Some locals resent new transplants.
There is a very broad representation of wealth spectrum, can see a million dollar place next door to a trailer park.
There are some very, very liberal pockets of very influential people scattered around (mostly infesting CdA and Sandpoint) in local media, tourism, politics, art/culture scene and healthcare...
Close proximity to WA state leads to some cultural "enrichment" from Spokane, but most of Eastern WA is also pretty conservative.
Moscow/Lewiston are beautiful as well, but somebody else can give you a better rundown on those towns.
Are you a pilot?
Again, congrats on your retirement!