I like the idea, but have some questions about it:
Isn’t it better to have high level Montano instead of Shield Bash ? I know that Slithering raises strike damage, but Lunge raises slash damage, and outside of Flaconnade, I don’t see more in the build. And Montano has a chance of Paralyze and Slow(with attribute) enemies.
Are max level Lunge and Esquive Toucher really that necessary ? I know it raises Evasion a lot, but since you’re pumping a lot of points into DEX and have guardian’s attribute, you should have at least some evasion already, even at high end content. I’m guessing level 7 on each of them should be enough. It should be better to raise Sept Etoiles(for bust damage) and Attaque Coquille(for a few more seconds of it’s Pierce buff)