I have BA tickets to KL arriving 15.45 pm. Is it too risky to book an Airasia flight to Bali at 18.15? Does that seem not enough time? Obviously I know there is a risk, but as the flights aren't horrendously expensive if the outbound flight would be massively delayed I could book a new flight, but if it's really not enough time I'll have to book the 19.40 one instead, but that's a shame as arrives quite late.