Seems like you're in a good spot right now.
You do have a high gp for how your roster looks, so I understand how you are having trouble in GAC. Some quick tips:
- If possible, move Yoda to your Jedi team, and maybe bring them on offense. (However, since Padme is your best team, you might need Yoda with that team in order to beat a strong team your opponent puts on D.) So I would bring those Jedi on offense in case you have an opportunity to put Yoda with Bastila and make a pretty strong offensive team.
- CLS is a great offensive team in GAC. You can 3-man lots of teams with just CLS, Han, and Chewy. Put an effort into unlocking Chewbacca at least 5*. This is a team that would benefit from some gear.
- Slap a zeta on Vader's Merciless Massacre. This greatly increases his viability, and if you gear him around the 12-13 range, he can solo a lot of teams, and he's a powerhouse on offense.
- When you get JKR, focus on gearing that team as high as you can (gear 12-13). Move Yoda to that team permanently. (You can keep him with padme for squad arena though.) You can move R2D2 to Padme's team for GAC.
Hopefully that can help you. Once you get Vader, CLS, and JKR teams up and running, that should help you a lot.