I feel once a person has experience then it broadens his thinking. And you will understand the value of MBA degree.
To be on the safer side work for one year then enroll for part time mba offered by institutes like ITM, Welingkar etc.
However, if you plan for top notch institutes then its advisable to devote few months and undergo rigourous training for the aptitude tests b'cos in this case you will have placement assurance.
