You described the Harrisburg area perfectly. You have plenty of hospitals to choose from. Areas that are more rural: West Hanover, fishing creek, lewisberry, Halifax. The area between mechanicsburg and Carlisle (boiling springs sort of) can be nice but it's getting more expensive.

I wouldn't venture in to Hershey as it's much more expensive and living in somewhere like west Hanover township or even annville/palmyra will allow you cheaper living with quick access to shopping and amenities in Hershey. Hummelstown is a nice little town, but also getting more expensive and not as much rural area left with the new developments popping up.

If it were me, I would find a place in fishing creek. It's only 15 min from Harrisburg city, super quiet, close to shopping on the west shore, and close to some hiking areas. It can be expensive but you typically get a few acres if you are willing to pay for it.