Try to get in good with the Scions, then man the home base, stay the hell away from any sort of combat.

Use meta-knowledge to cheat like crazy by arranging to always be where the fighting is not, among other things. Try to BS my way out of having to explain how i always seem to know where the biggest danger is going to be and acting to avoid it in advance.

Try to build a trap in Minfilia's solar. Yes Nabriales, i know you are going to be a thing, and while i sure as hell can't fight myself, it might be possible to set something up long before he actually shows.
The big questions are: How many crystals are needed to equal the value of one soul? How can that number of crystals be acquired within the timeframe of ARR? How can those crystals be stored in a way as to be readily available when stuff goes down? How can i get the Scions to not decide i'm being all sus by doing these things? If all four of these questions can be given a good answer then great. If not, then sorry Moenbryda, i tried.

*Sweats* Waaaaaaay to many potential points of failure here...