I like the soft sand color of the ceiling, and the floor with the white, as well as the (Scandinavian looking) open shelving.I like the cooler tones with the white cabinets--you did GREAT Job with this!

Though, if the blower in your furnace is not a DC variable speed unit {i.e. an old single speed 75-100amp motor}, you should consider replacing the blower since it will be running year round and the blower tends to be the biggest energy consumer in older forced air systems.If the gas furnace is older (only 65 - 75% efficient vs 95% in a modern furnace), you could always replace it with a hybrid solution ... natural gas heat with an electric central air cooler.

Any type of heating system can have areas that are cooler than others, based on insulation, amount of air circulation (interior doors should be open for maximum circulation), type and fit of windows and exterior doors, and other factors.

Ideally, we would like a cabin in the mountains where we can enjoy cooler weather during the summer months.

If you're working with a Realtor, s/he can re-run the comps, as the market may be a little cooler than it was when you started the project.

The 2-4 units are very supply limited and there is a ton of demand chasing these deals I could see this being the price bottom but a cooler market with more concessions, etc. being 2023. 

I prefer to deal with cooler heads and although this still will not prevent me from dealing with them in the future, it does leave a bad taste and can justifiably lead to a hell no from anyone. 

A roller coaster tester would be cooler but that ship has sailed.

Kids are back in school which negatively affects how many families are looking to move.Other seasonal effects:1) Weather - getting cooler, which is a negative in colder climates as who wants to drag their couch through the snow?

No carpet makes it a few degrees cooler in the summer time.