many things to many people.
It should be money you have absolutely no other use for, in case the
large negative variance monster takes it away.
The 1% of BR for max bet is the ideal full kelly bet. But full kelly is
actually about 3/4 of 1%, for your advantage isn't always exact.
You need to start your ed-yew-ka-tion by reading a few books, or at
least read/take Gamemaster's free online BJ School. Sorry I'm not on
my computer, or I'd give you the link.
You'll be better off studying a bit, first, before asking every question
under the sun here. Most of your questions were probably answered
here before, so search, too.
Good luck with your quest.
BJinNJ