It sounds like you have weighed your options and you want to move in with her, but you hesitate due to family opposition. Is that correct?

You are an adult and as such I think that you can and should make up your own mind.

If you move in with her, you will find out whether or not it was a good move. You won't have to wonder, you won't have to rely on the opinions of family members.

Don't let family members talk you out of doing what you have thought seriously about and know that you want to do.