btw... yes colder and wetter, that is a given

but also more stormy, more floods, more hurricanes, more earthquakes and more volcanoes

so deserts are a bad idea too because stronger winds means more danger out there, even if the days are cooler

high altitude areas above about 1.5km are probably not so great either because they will become acutely more desert-like, with lower overall rainfall as most of it is blown past or worse, dumps on you as ten feet of snow cover

coastlines are uber bad, vis hurricanes, floods and earthquakes and volcanoes

it's tricky, i'm really starting to home in on either western balkans or eastern rockies, when i put it in highlight, these are the places with the most mitigating conditions, dense forests, lots of water, a bit of geothermal resource, and relatively low population density, i'm more comfortable with balkans because of living there for so long but central-west USA has the advantage of a more developed economy, it's a tossup still for me