RE: Wittman W-10 Tailwind
I really don't have all that much experience in electrics myself but I would suggest looking around at a Axi 28xx motor with a 3S 3300 mAh pack. For the record, I have compared Axi motors to their BP Hobbies clones and while they look the same, they don't perform the same. The BP Hobbies equivalent would probably be a good match anyway and a lot less expensive.
Just my SWAG & uneducated $.02