I have an electric plane and a Remimgton 870 pump shotgun.
The plane can do more damage in less time than the shotgun.
I'd give mine away except for the fact that I don't dislike anyone bad enough to give it to them.
Anyhow - for doors. Dremel makes a plane attachement for a rotary Dremel tool.
It's the slickect thing I've ever seen for doing doors.