You should be considering your next career steps in light of what you want to do long term and what you are interested in. Picking a career just because it will get you into B-school can backfire if you end up in a job you don't enjoy and consequently don't perform well in.

Extracurriculars are helpful, but less important than your demonstrated ability to perform in the workplace. Ideally, you would find a volunteer position in which you could assume a leadership position and contribute from your educational and technical expertise. That is particularly important if your work environment is one in which you will not have direct supervisory responsibilities. Without extracurriculars you have few ways to show leadership, particularly in "horizontal" organizations.

Schools are often sensitive to people who already have masters degrees. They want to be certain that you want and understand the value of an MBA and are not simply looking for two years that promise to be more fun than working. You will have to make a strong case for what you want to do with your multiple degrees and why an MBA is necessary.

Good luck,