This is correct.
This is not really correct. Mooch has performed testing on these cells and rated them at more like 25 - 30A continuous for best performance. You can read more about the nuances of p42a here → Molicel P42A cell discussion
I find with cell ratings its always better to keep your maximum possible continuous current draw significantly lower than your worst case battery ability.
By this approach, you could say your battery is only capable of 100A and running at 90A is quite close to that threshold. Do not be surprised if you see noticeable sag occurring while running at that power level.
All that said, nice build! Far better than my first!