I think you're OK in regards to relations, not a big deal tbh. It just depends what you want and which avenue is the best one.
If you want something long-term then on paper, it seems neither is that option with the 44-year-old (sure she's a MILF) or the 19-year-old will provide that as Hanley has reliably noted in his posts.
If you want fun, I'd be tempted to try out the 44-year-old, leave the young 'un to enjoy University (but still remain friends) and who knows, you might find someone else to settle down with.