I would say that with the kind of degree you are applying for and your profile, GMAT will probably matter less than your SOP. Your profile is amazing. Reflect this in your statement - go on about your academic and professional achievements and (I guess it's important for the Said School) why you need their MSc degree, what you will do with it, how this education will benefit you and Moldova. This is what I think. I think your chances are great; just have a brilliant SOP.