I'm going to suggest my gf to give up on her dream.
Why would you want her to give up her dreams?
Her dreams are incompatible with us living together.
It's wrong ro make someone give up their dreams. She'll likely resent you for a long time to come.
My dream is to have her and her dreams can't come true if we live together.
Your girlfriend is not your property and she has all the rights to dream about whatever she want. She'll see your behaviour as controlling and probably damage your relationship. If you think her dreams are getting in a way of you getting together you should talk to her about it.