I live in Colorado (most easterners don't realize it, but I am in CORN country), and eastern Colorado should be part of Nebraska :P

Around here everyone uses Corn or Hybrid stoves (they can burn Corn or Wood Pellet).

A few of em out there burn about a hockey puck (literally in size and shape) "clinker" waste every month and that is it.

If you like your money to stay with you (as sure as most others do), I would suggest insulate as you can - the savings are beyond worth it. My grandads "shop" has insulation and I will work out there in the winter. His "barn" (attached to the shop) is uninsulated, and holy cold - no amount of heat will save that place it too cold for insulated coveralls even.

I know priorities and time.. so in with everything else it will take forever, but I think you will be well pleased at how nice it is when you have the insulation done.

I think you made a good choice on the stove, hauling wood takes you away from rebuilding the engine