10 year age gap?

So I'm almost 20 years old and my friend is trying to set me up with her work friend who is 30, he also has two kids. I love kids and actually want my own in the near future, so that's no problem for me, it's mainly the age thing. He's a really nice guy but I just think I'm too young? Like what if he thinks I'm immature? Should I just go for it?