Hmmm. some quick looking around I came up with this:
http://cgi.ebay.com/2712-12-Outrunne...QQcmdZViewItem

Weighs one ounce and will put out up to 18 ounces of thrust. Far more thrust than needed but you would have to use a large prop to do so. You can use a 7.0 6.0 prop and get less thrus but probably still more than enough to get her off the ground. Only two dollars shipping from this dealer!

Robert