Started a Nova yesterday to get 99 with.
And also did all of this theorizing prior to make sure I had all the pieces for RotW.
There is just so many monsters that's immune or +75 lightning resistances that in the end it ended up be slightly slower with the 200fcr build. Plus the big thing is QoL with insight on merc 523 mana per second vs 211 mana per second. Plus triple dip from prayer.
But no doubt Eschuta + Spirit 200fcr build is viable now. Just not practical when self-wielding infinity is a thing.
Mhm it works in chaos because the light immunes have low health, but in areas where the light immunes are tanky, self infi just wins out. And although the damage of 200 fcr might be equal or better in other zones, it is way more intense to play, both because of squishiness and because of actions per minute.