Its not a bad starter pack, but people will warn you against the build quality of Chinese packs, as well as their shotty BMSs
That being said, if they tell you that 40a is the limit, I would respect that. Your cells can do more, but I wouldnt stress the BMS with that kind of output. Its possible to open up the back and install another BMS, making it a vastly superior battery.
This isnt recommended unless you know EXACTLY what youre doing, I trashed a pack like this before
Learn from our mistakes and make a great board, good luck!
The battery should output 60a max, although you shouldnt set your vesc parameters to this, youll burn through it faster than… I dunno something about coke and vegas
A good medium setting would be 20a on each ESC, that should provide enough oomph to get you started, and then you can decide to scale upward(less range, more power) or downwards(more range, less power)