Deferring - Good Idea for Non-Traditional Applicant?

I understand most people defer for family emergency and economic hardship, neither of those apply, but I find myself debating deferring. I have acceptance at top-30 school with a generous scholarship. My choice to defer is not based on trying to reapply to get into a better school (though who knows). It's more for personal-career development. I want to enter b-school confident about what I want to do, instead of hoping I know what I want to do.

With a Humanities degree and three years teaching (2 inner city, 1 in Asia), I have no background in my post-MBA target fields. Even though adcoms might like my profile, I'm not so sure about hiring managers, and since I'm still debating between different fields (a management rotational program in Big Oil, management consulting, banking), I feel like experience in one or several of these fields would give me more clarity than classroom simulations or informational interviews alone.

For several factors, the possibility of doing a pre-MBA internship this summer (2012) is highly unlikely. Recruiting for summer 2013 internship starts so early in the Fall I will not have had much time to test out what I want to do, so by the time I've finished my internship, I worry that doors will have already begun closing on many fields.


Other Factors:

Reasons to Defer
- Work and do internships to gain experience/clarity
- even with an extra year I'd still be at or younger than the average age (26, instead of 25)
- would finish my contract with my current employer (instead of breaking a few months early and forfit part of my pension)

Reasons Not to Defer
- Would NEED to find job next year (since staying in current position doesn't add value to my WE), might have unemployment for 1-3 months since I'm living abroad now and its difficult to secure employment in my target city in the US
- Scholarship not guaranteed next year, though still probable
- Young age will be a benefit in some hiring managers' eyes.


On a personal note,
As a woman, I feel like planning for marriage/babies was my biggest reason for doing an MBA NOW, instead of waiting till I had more experience. I don't want my gender to be the biggest factor in my decision. Also, I feel like I rushed my undergrad degree and was pigeon-holed quickly. Trying to avoid doing the same thing with my MBA.