I think this depends on how early your definition of early is. However, general considerations about marriage would include not only financial but also emotional stability.
Marriage is a lifetime commitment and should not to be entered into lightly. The person you'll gonna marry now will still be the person you'll be with after 40 years. So make sure both of you have already spent quite enough time into becoming the type of person you'd want to marry. Because by the time you're living in the same roof, it won't provide guarantee that those traits and quirks that you find attractive before will not turn into an annoyance.
Finally, and I think the most important thing is to assess whether or not both of you will be able to put into work the vows that both of you will recite at the ceremony: "For better or worse, for richer or poorer, in sickness and in health"--that you will always choose to be with your partner no matter what the circumstances are.