7 Star Chewbacca or 5 Star Dengar for Boba Fett Group?

I'm running arena (and general gameplay) with 7-Star Boba Fett, IG-88, Lando, Chewbacca, Greedo. Would it be worth replacing 7-star Chewbacca with 5-star Dengar with the new Boba Fett leader ability?...