Generally, the fractional Kelly criterion is a better method to get maximum long-term profit. However, you might also want to reduce variance, especially when starting out. This is best done with setting a safe max stake of around 1%. If you’re all about maximizing your profits, and can handle downswings, you might want to increase max stake to 2% and let the Kelly criterion work more effectively.
Set your max stake, and more settings, under Options.