As an actual meteorologist, I would love this job ingame! Admittingly didn't read the massive spreadsheet, but my first impressions are that it feels a little bit like RDM due to the stances you indicated. However, being 'locked' into one before moving on to the other is a nice twist that could make its niche more solid.
And of course, for the limit break just make your enemies cry with equations. That's some real pain right there D: