Will this strategy work?

Hi all,

I just started card counting a couple of months ago and use KO. I don't have a high starting bankroll(300-400$) so I cannot afford to lose. Thus, I cannot sit down and bet at negative tables.

What I plan to do is back count on the low limit tables(10-15$) and wait till I reach the positive key count then flat bet all the way while it is in the positive zone.

Will this work? Will it almost gurantee a win? Any suggestions would be great.

Thank you for your time.