I think that Gree is a good and creative choice...well done! As stated, Yularen's Opportunist boost won't come into play all that often. General Skywalker's Momentum, on the other hand, would stack with Close Quarters Fighting, and it turns the Comms into +17 for 80dmg chargers. However, that's a different build entirely. Therefore, without considering GOWK (who costs 55pts), I think Gree is the next best way to boost your Commandos.
And personally, I always use Queen Amidala with the Commandos, because taking 0 dmg on a mobile twin is better than standing still and getting hit back. The Commandos' 50 hp is good, but with the heavy damage output of so many squads, it disappears quickly. Furthermore, I know of very few players who will place an important piece out in front of your 30dmg quad-shooters.
You can still use R2 to tow a Commando up for an important 120dmg, though, so it's not like you won't get a chance to make the big attacks.