Can any RTP tell you how a run ends?
Choosing to play Big Bass Bonanza 1000 means accepting one thing first: how often the bonus round arrives is not known in advance. The result of one session is random, whatever the RTP says. Two players with the same bet can finish a session far apart, and no figure on this page predicts which one you will be.
Checking which RTP version applies to your game means opening the game rules, because only the rules show which version Vegastars Casino runs. Do that before you set a bet. The 96.51 figure on this page describes one version, and the rules name the one you will actually play.
Aiming for the top prize means treating x20,000 as a ceiling, not a target. The maximum win of Big Bass Bonanza 1000 is reached very rarely, and no one can say in advance which session, if any, gets there.