30m , no kids . Might become a step dad..

Im turning 30 soon, I make 125k a year, I've been single out of a 9 year relationship for about 10 months. Im talking to a girl with two young kids. I own my own house , I want a family in the future . I'm very attracted to this girl (also 30) My life is a lot more put together then hers. She works basically minimum wage (part time ) and lives with her parents. Not sure where to go from here. I have no experience with kids. Im open to the idea but it's a big change.