That bms has lvc hvc protection. Esc usually has lvc too so Nothing to worry about. About the esc...
They are kind of telling you to go for a vesc or waste your time and money on several random esc that will get fried very quick.
hence the recommendation of not to buy that gorgeous piece of garbage.
Seems you are not too familiar with the battery building art so I'd go for an end-user solution or sony konion cells. They tend to self balance so no need for bms. You get lvc from vesc and hvc from charger.
In case you don't want to buy the vesc the fvt has as much lovers as haters. Worth gambling.
https://www.banggood.com/es/FVT-CBWI120 ... 85970.html
many people fried it really quick. Others reported nice results. Your choice.