Welcome to the Board, Yanis, and my congratulations on winning the Street Championship.
Although my own thoughts on the matter of Street RPS Strategy are probably woefully out of date, you may still gleam some useful insights from my "Street" RPS Strategy
topic and subsequent replies. I find of great interest that your "never play against a player that has more money then you" strategy is very similar to my "Play People with Less Money" approach.
Street RPS has, and will continue to have, a different skill set from Tournament RPS. They are overlapping sets, but the area shared by both can be quite fertile ground.
I welcome your scholarly insight into the area of Street RPS Strategy. You may find useful the observations of other top Street RPS players, including Dahmernator
(who was the unofficial #2 Street Player last year, and probably the best Street RPS player I personally know) and Geir the Viking
(Coach of Team Norway, Geir blends team play with an innovative approach to money management, which put Team Norway among the top 5 moneymakers this year. Last year, Geir's protege Simen Wang was the Street RPS Champ at the ripe old age of twelve.)