Solo Trip to Singapore

I'm a guy right out of college going to Singapore in 4 months. This is not my first international trip but it is my first time alone. And I'm travelling with my own money which puts me on a budget threshold.

I'd like to know general tips that could help me. And with regards to air travel, which airlines would you guys prefer from **Bangalore** to **Singapore**. I really don't want to spend much on tickets and would like to have an option to cancel if things are not looking right.

I'd like any suggestions from you guys. It's a 3 night 4 day trip. I have a budget of around 50k for the entire duration of the trip. Would it be sufficient or would I have to shell out extra money?