I'm glad you see "future talk" as creepy, 'cause that's what it is at this point. And don't write her off as wrong for you just yet. It's true, you need to adjust and get to know her. I would think getting together with each other maybe once or twice a week, and seeing how comfortable you all are after a month or two is a good early pace for getting to know each other.
It's also generally a good idea to be very cautious about who you let around your children before you know someone. I know that many poly's don't let their kids meet potential partners until trust and a very good knowledge of the person has been established.