I'd shoot for Wedge next if I were you. He's an effective arena leader for a young shard, plus you'll always find use for his ship, he's a good raid leader, and he's an awesome leader for TB. Even if you eventually rotate him off your arena squad, I don't think you'll regret having a geared up Wedge for the foreseeable future.
Just another piece of advice...start working towards being able to max out credit heists as soon as possible. Lando is a great toon for this, and he also works well with a Wedge lead in TB, plus you may even find some arena use for him if you want to take out a NS team with stealth acolyte.