Battery noob, need help filling out a sheet

Okay. He says 100 is overkill, but so is 80A. What is the reason for 80 or 60,or even anything above 20 for that matter? @Jinra you mentioned that I should stay away from 80A even though it can handle it, what would you say then 60?

80a burst is fine, you should probably aim for a 60a bms

yup. 60amp is plenty.