7* Emporer Palpatine

I'm not going to be able to get 7* Thrawn this time around, but I would be able to do a 7* Empire team I think by the next R2 event if I am able to get Palp next round. If Palpatine comes sooner than I think I'm wondering if a Biggs could fill in for Kanan in my Phoenix lineup.

https://swgoh.gg/u/vericthemaster/collection/?f=rebel
My swgoh rebel roster for reference.