Some schools report that almost 80% of their students are attending b-school to make a career transition. You have an interesting background and have a good focus on where you want to go. This combined with your strong GMAT score makes you a good candidate for SOM.
When you mention leadership, it sounds like you're talking capital L leadership in that you're thinking about leading a team of people toward a common objective. Well, there's also lowercase leadership (or silent leadership), which is taking responsibility, showing initative, executing objectives and working closely with others to get the job done. In many ways these traits are more important (especially given your target school and desired career path). I'm sure you can come up with examples that display these. I'd encourage you to step out and go for it this year! You know where you want to go... why wait?