I do not want to criticize, but a maximum bet of 40,000 bit with a bankroll of 450,000 bit is not dangerous for the owner?
Anyway, good job with the website. Good luck, I wish you success.
That 450k bits represents the max profit you can win per game, not the bankroll. For safe bankroll management, I'd expect that the OPs bankroll is about >= 100x larger than that.