Mini-split HVAC in new build?
I recently had the same question when building a home in N. Alabama for a relative. I asked all local HVAC contractors about it and they all recommended against it for two reasons. 1) cost 2) reliability. They stated their typical installs require replacement in 6-8 yrs. They did state, however, that they were a good option for things such as small additions or bonus rooms above garages where upsizing the main system would be difficult or expensive due to additional ducting requirement.  I am surprised any heat-pumps would be sold in climates as cold as yours. They might maintain temps but I am certain one would never truly feel warm in a heat-pump heated home with temperatures THAT cold. Here in the deep south, I set my dual-fuel unit to switch to propane at ~30 deg. I would freeze to death if that cut-over were at -15!