I would definatively withdraw the vast majority of the winnings and use it to invest in something like a house, bitcoin or stocks.
Statistics are not in your favor, so if you win big, don't push it but take the winnings and use it to your advantage.
for me i agree with your idea mate if you win you must think wisely on how to use your winnings so instead of playing back and try your luck much better to invest it to something that might be profitable those two examples are good placing your money with the house or investing it even inside alt trading better to deal with this instead of losing it again.
Its really the best choice and a good move since you are securing already your profits and putting it into an investment is a wise idea and you realize already that we should not put again our money to gambling to win even more because that's already a sign of greediness which is really bad and might cause to lose those winnings again.