Your b/c is so similar to mine when I came to U.S after 2 yrs in Strategic Planning Dept of a national monoploy. It depends on where which area you want to go after MBA.
If your current employer has "Big Name" with high-level/upclass exposure (such as networking resources of high quality and overseas businesses), I suggest you stay there for one more year and use the time (workload in state-owned enterprises should be less heavy) to improve your application package. Lots of people from big SOE got good job offers upon MBA graduation.