I would seam it at the wings, or at a part that is the most un-noticable.
I would avoid trying to do it all automactically. Try and select the parts individually, such as the windscreen, and unwrap them seperately. It gives you more control over which parts get more texture space.
I would avoid trying to do it all automactically. Try and select the parts individually, such as the windscreen, and unwrap them seperately. It gives you more control over which parts get more texture space.