How do you handle the following situation:

You're playing a 10 person SnG with the standard payouts to the top 3 places. You've reached the 50-100 blind level and there are between 7-8 players left, all with close to the original starting stack of 1500. Obviously the table is playing fairly tight. You've stolen your share of blinds here and there, and you've come to realize that if anyone plays back at you, they probably have a strong hand. What do you do?

How do you play in this scenario with each chip range noted below?


1500-3000

3000-4500

4500+


I rarely find myself in this spot, but when I'm there I never really know how to play it out. How to give myself the best chance of winning.