Dex would probably help with survivability. I like Clash because it is also great soft mitigation, especially against Vader. Spending one resource to blank Vader, put Yoda on the 3 side and Barriss on the +2 feels good. I like Caretaker, but it feels pricey. I considered Resilient
What if you swap a Clash for Use The Force? It would be much more versatile. Also, Luke's Protection, Dex's Diner, and Caretaker Village would work very well in this deck.