We life in central Indiana with a country place on some acreage in SW Indiana.
Our first big issue was security. A house that is obvious unoccupied for extended periods is a good target. After we installed a monitored security system, the thieves have avoided our place for a dozen years.
Shutting down the house for winter requires some thought. Our place is all electric (no gas available). The utility rate structure requires a person to pay the equivalent of the minimum year round---even if you turn off the power during the winter. We liked the idea of leaving power on for security lights, power for the security system, and a freezer.
Our house is a 36' x 48 footprint built with 12/12 pitch attic trusses to yield an 18' x 64' upstairs. About half of the first floor is garage and the other half is living area. We had the house built with 2" x 6" walls, and good insulation. We are getting older and spend little time there during the winter. When we leave, we turn the thermostats down to 62 degrees, turn off the water, and lock the door. I would estimate that our yearly heating bill is only about $350 to $400. To us, it is worth that amount to avoid winterizing.
We had separate heat pump heating systems installed for each floor. This solved some ductwork issues and allows one system to be a back-up in case the other breaks down.
Cultivating a friendly trustworthy full time neighbor to keep an eye on the place makes sleeping much easier when you are away.
Few "young" folks can afford what you are wanting. If you are building, plan for some physical decline while you own the property. Low maintenance is a must. Wide hallways, wide doorways, lever door handles, wide stairways with minimum slope and good handrails, bathrooms large enough to accommodate walkers/wheel chairs make sense even when you are able bodied.
Everyone loves the look of a log cabin high ceilings and windows, etc. Before you commit to them, consider the maintenance issues associated with them.
Make sure that your house is designed to best use the land you purchase. Huge windows are best when they give you a good view and are properly oriented toward the sun. (Catching the south sun is great on a winter day. Catching the west sun may be less appealing on a hot summer afternoon. If you spend part of the winter in the house, having the snow slide off you metal roof into a huge pile in front of your garage door isn't much fun.)