I totally forgot Dare Hobbies... They have some small WWI scale planes. Fokker Dr.1, Sopwith Camel, SE-5a. All small enough to fit your table. And not too expensive.. And can be elictrified....

http://www.darehobby.com/index.html

Ooh! just saw a D7...

Click on "Airplanes," then "Electric 1" and/or "Electric 2"

I have a 1909 Wright Military Flyer from them on my stack of kits to build...