I see this thread since April and you have only posted 4 games in total with 50% winrate. We need a lot more statistics than those to tell if your system really works in the long time or it does not. However I want to agree with your points on how to manage your bankroll and to place those kind of bets (except the odd , the user decides and should not be forced 1.8 and up) and such bankroll management can save many avid gamblers from pure misery in the long run.