From what I have read from the other post, some of them gave you good steps to follow. As a quick reminder:
- Get your phoenix squad to 7* first and geared them since they will be your main arena squad and will clear your GW everyday.
- When you have all of them 5* you can try Tier III health mods challenge, spend as I said before 1-2 week getting health mods as they are mandatory to climb in arena (I say health mods because you don't need any specific squad to unlock tier III). Square will give you always as primary stat Offense, diamond defense, circle health or protection (protection is better), arrow try to get speed, triangle try to get critical chance or critical damage and for cross try to get potency or tenacity. You should focus on looking for speed in your secondary stats, speed is all in arena. Then return and push Hera/Ezra to 7*.
- For ships, keep in mind what Liath told above. Moreover, you can work on Ghost and Phantom at the same time, people in rank 501+ receives 800 fleet tokens I don't understand why you have said you can't.
- I would invest more crystals on cantina refresh rather than normal energy refresh to max them up fastly.
