I think you might struggle with the low number of figures. You've only got 6 figures that do damage (and Leia's damage output isn't that great).

It's a hard hitting list for sure, but as soon as you lose someone it's going to go downhill quickly. You also don't have anyone to control terminals or grab objectives. Gideon could I suppose but then he might not be in position to use his other abilities.

Ultimately it's probably a high risk - high reward list. Be aware that losing Leia or Bossk early will most likely result in a loss. Same goes for the trandos really. If you lose one group you're going dropping from 7 attacks (inc Leia's extra one) to 5. If you lose Leia, you're also dropping to 5.

If I was playing it. I'd focus down one group (doesn't really matter which) very quickly and then I'd probably just win the war of attrition. Any time I can get you to waste actions and attacks eg by shooting at long range or stun, bleed etc I get the upper hand. Same goes for control objectives and terminals.

It's still a scary list, but I'm not sure it's very competitive.