This doesn't work for a number of reasons - namely that Jordan White has specified that the O5 are in their late 20s, and they'd be in their early 30s in the first place.
During the Utopia era the New Mutants were all around 21 at the oldest, it had only been four years since the events of Inferno. And there's no way it's been more than two years since then, all things considered.