How often will the bonus round land?
Deciding whether to chase the bonus round means accepting that it may not come in a given session. Nobody can know in advance how often the Free Spins trigger, because each spin is random. The result of one session is random too. A stated RTP describes the average over a very large number of spins, not the outcome of your own visit.
Choosing your session starts with the RTP version, and only the game rules show which one runs. The three versions sit within 0.05 percentage points of each other. The table below shows what each one returns on A$100 staked.
Deciding how high to set the bet changes the money, not the chance of reaching the top ceiling. The maximum win is 10,000 times the bet and is reached very rarely, so no session should be planned around it. Read it as a limit on the game, not a target.