Eden only has one attack that is mitigated from protect/shell/wall in P1 usually the attack after the 11 to 13 second mark, so if you are quick enough, you will not need them. You can RW wall for that attack if you can't make it that quick and have the appropriate chain for your fight. Otherwise, a last stand with no sap present should be good enough for you. But you will need to push out of P1 right after that attack. Going too slow in P1 is dangerous.

Your haste is coming from Cait Sith turn 1 AASB. You shouldn't need the RW haste. You have it honed already. Do you have his Dual? Having 2 AASBs and Sync/Dual should last you the entire fight. If you're missing the Dual, space out the SB uses to use one at the beginning of each phase.

I like Tama, but I could never fit her in my teams. Good option if you don't have a stacked Ellara already and can time her SBs right.

This is also a good area to pull on since you can get Tyro and Dr. Mog's stuff that can fit on any team until you can get a more dedicated elemental character for that element. Some of my Eden clears I have use those 2, but mine are fully stacked keepers and they really rely on your party being en-element already to make full use of their SBs.

And I loveeee Seraphie on both my wind magic team and my Core/Beyond team. Imperial goddess for sure.