taking a MBA for a career switch is rather difficult. and the brandname of SMU is not as good as overseas big uni.

I suggest a few things you can do;
-explore within your company if you can take on projects or opportunity to move to the area you want to
-start looking and talking to headhunters/recruiters about what you want to do and get some advice. Dont just rely on 1 headhunter, get a few and get different perspective
-is there a role model or someone you aspire to be? If so, have a chat with that person and ask for advice on how to get where he got to

You will be surprised that many are very happy to talk about themselves and give advice if you go with sincerity and humility.

It is a big decision to undertake MBA as it costs money and also opportunity costs. One word of advice is before you do any course, check out RECRUIT on ST, or websites to see if there are any jobs you can take and what are the requirements to get a sense of reality. Otherwise, you are just wasting money, getting frustrated and in the end back to square one.

Good luck bro