[X] The Mire Wolf
[X] Evening Sky - Pristine Star
[X] Evening Sky - Shine Bright - 2 Arete
We really need to prioritize healing capabilities, so the Tyrant Beast is absolutely not on the table right now. I would pick the Plumed Offering, except for a few factors I consider very important.
The first, and more significant, is that it only takes 2 hours. That is half the time of Plumed Offering, and a fifth the time of the Tyrant Beast; Apocryphal would absolutely think a race against time to return to our allies under attack while we're gone would be interesting, so we need to preclude that as much as we're able.
Secondly, this allows us to pick both options for the Evening Sky, which have synergy, which involve minimal spending and which unlock advancement opportunities for Gisena in the future. The Pristine Star gives us all passive healing (maybe it'll even work on Versh!), and Shine Bright gives Hunger an enhancement to the efficacy of the passive healing and an additional toggleable effect for greater personal healing still, and one which if not abused won't lead us into Tired or Exhausted statuses. For 2 Arete that's excellent investment return and it means we can avoid picking up anything else relating to healing for awhile, so we'll be able to grow the remaining 3 Arete for other purposes. And again, findross utility on top of all that, so we don't even need to worry so much about looking for that; we'll undoubtedly pick something else up that'll speed it up eventally, but we won't need to look for something to give it in the first place.
As tantalizing as Second Stage is, it can wait and will almost certainly show up again; multi-stage boss battles are a staple and we're literally in a dungeon universe. Now it's on our radar; let's let it go this time and pursue it again soon.