Hi!
The MS MIS is a very specialized degree, intended for individuals who are seeking a management (or advanced technical) career in IT. It is more about applying business problem solving to the IT field than learning broad leadership and management skills like in the MBA. From what I know, many students come from technical backgrounds, like engineering, and have somewhere between 1-4 years of experience, so it tends to skew a little "younger" than MBA programs. It sounds like it could be a good fit with your profile, assuming there's a good match with your post-degree career goals. If I were reading your application, I'd want to know a lot more about why you want the MS MIS, especially since you already have an MBA in Finance. If you want to continue on in Finance, then it may not be all that valuable.
Good luck!