Several thoughts come to mind. Living in E-town has you close to the DS Machine manufaacturing plant in Gordonville, just east of Lancaster. Ifyou have not already, why not drive over there and talk to them about their stoves, see what they have, etc. They also have a great selection of registers to choose from.
I run a Hitzer 503 insert--similar to 50-93 freestanding stove--and love the hopper feature. Can be loaded up and needs tending only every 12 hours. No ash clogging problems whatsoever. I heat my entire 3000 sq ft contemporary house with this insert and it does well. Air movement in a ranch home is not as easy, but registers should help. I believe both DS and Hitzer stoves are of the highest quality.
Running a coal stove involves science and art and feel. If you are going to rely on your wife or son during deployments, are they interested, well informed, and able to run the stove? Can be dangerous if not.
I used to spend alot of time in E-town as a kid and remember the Moose theater, Hetrick's store, and the smell of the Klein chocolate factory! Good luck.