You call that "safest"? Are you got drunk now?
Your "safest" strategy/script is very simple, do you want to know? You use 5 bit as base bet, increase on lose 3x (200%) then you set stop at 1.33x, if you got 2 lose, set it at 1.44x, if you got 3 losses, set it to 1.48x, if you got 5 losses, set it to 1.5x auto cash out.
Am i right?