Brandye offers sage advice for how to live life up to the wedding. As for the ceremony---
ELOPE.
Now, having said this and that, are you absolutely certain that your family do not see something about the relationship that you are blind to? Have you asked yourself--or them, what they do not like about him, or have you just taken the defensive without knowing the other side of the debate? Food for thought.
As for starting a marriage, please read this article:
I think we are ready to live together!!
We frequently hear about people living together who later find that one, the other, or both are not happy living together. Similarly, we frequently read a post in which a couple is contemplating moving in together and looking for a suitable residence. Here is an initial Check List.