I think that maybe any of the Open B combat designs available as kits would do well in this dual role. It would be better to take a combat design and race it then to take a racing design and combat it.
Last year I flew my open B battle axe to 1st place in our open class, sport race at my club. I broke my primary plane and used the Battle axe to fill in. You can change the prop to get a little more speed, but the Avenger or battle axe would be excellent choices.
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