I would personally take the MD just because I have goals of potentially practicing internationally and want to keep my options open (some international countries still do not recognize DO). But it really depends on what Rowan has to offer for you to make you choose it over the MD, such as proximity to family and cost and also the specialties you intend to practice. I would look at the match list for both schools and see which one matches more in your specialty of choosing and also overall matches more to competitive specialties.
Were you able to visit both campuses and talk to students? This is another factor if you like the campus/ location and your interaction with the students/ people there. Attending DO schools in my opinion is not a disadvantage in most cases, so it comes down to where you see yourself happier and considering factors important to you.