With a little work you could go with a resistance zeta... but you would need to finish farming Finn and finish gearing finn and RP.
For Jedi you are missing some key pieces to make that team work, notably GK, Aayla, Ani, Snips or Zarris (Differnt combos of those +QGJ, Yoda work well).
First Order would probably be almost more work than Resistance since you still need FOO and FOST... Both play a significant role in that Phasma zeta led team. I would advise against going first Order unless you are willing to go all in on them.
Honestly imo I would hold onto those zetas until you get the team you want ready. You don't have to use them right away, and to make FO work you'll need a bunch anyway.