Well, I think risk management is not just about the local loss, it's about
bankroll management, so an improved approximation of what you would be saying would be to put a maximum value for the buy-in, either the cash game or tournaments, whatever, stipulate a risk based on a win rate, like for example you have 5bb/100 win rate in cash games, I think it's very appropriate to use a smooth bankroll management like 30 to 50 buy ins, now you are a winner but you only have 2.5 bb/100 win rate I think you should stipulate 70 buy ins of the level, this in other words would be betting 1/30 at the tables or 1/50 or 1/70, depending on the amount of buy- ins, now I will talk about the stop loss and stop win, to finish the thought with yours, now that we have decreed how much of the bankroll we will use, let it be 1% to 5% of our bankroll per buy in, I stipulate that it would be a good margin of winning 60 to 70% of the value that entered the tables, and a good stop 2 buy ins.
It would be like if you have 50 buy-ins of NL10 for example and you only play one table, however when you get $6 or more on the table you take your chips and raise, and when you lose 2 buy-ins you also sit out from table and take a pause, not only to avoid tilt, but also to study, be aware that it is much better to make small sessions profitable, than to bleed chips all night with no expectation of recovering them in the short term.
GL in life and felts.