Team and Shipments Advice

GokuMen

Hello guys. I'm playing since the start of the month. I've been following the forums for a while but this is my first topic, thanks in advance for any replies.

Right now I have:
6* Sid halfway to 7*
6* Luminara 35/100
5* JC not collecting shards currently
4* Dooku halfway to 5*
4* Kylo Ren going for 5*
4* Phasma 0/65

All are lvl 58 and purple gear.
Also farming daka to 5* from cantina shipments.
I mostly use Sid(leader) ,lumi, JC , dooku and kylo in arena. But I'm experimenting with Phasma leader and I think I'm getting good results.

So main questions are:
Who to farm after sid from arena?

Who to farm after lumi? You think phasma would be worth to go for or maybe I should start poggle? Or stop lumi and get phasma 5* since it both needs 65 shards as of now?

Was daka a bad choice to farm? Should I go for another or continue with her?
Edit: I also got a lucky 4* boba fett from bronzium after this post. Should I invest on him?

Thanks again for your replies. I appreciate every input.