Hi there
The Sloan Fellows website says this -
The MIT Sloan Fellows MBA Program is a one-year, full-time program geared towards mid-career professionals with 10+ years of work experience.
Your overall experience does seem to fit in. However, you might want to send an email to the admissions office to gain clarity if the pre-bachelor experience will count. Generally, for personal inquiries, the admissions officers ask to email the office.
All the best.
Gaurav