honey, i am going to offer you a hideous word of warning i'm afraid....
i do know that this can work for some people, the age difference. But not always and you are right to be cautious because if he wants kids, it could become an issue.
4 months ago i could have written that post of yours word for word, almost exactly the same age difference (my boyf was 30 and i'm 39), fell in love, madly madly, best ever... then after 6 months he realised that he would need to have children basically NOW if he is to spend his life with me, and though he really really wants a family he is not ready for all that responsibility yet.
So we broke up. That was a month ago. I still cry every day, so does he, we miss each other like crazy, but there's not getting away from the facts... i already have a son and that didn't help because i didn't have the freedom to run off at the drop of a hat. He said it's the hardest thing he's ever done. But ultimately he wanted to do it all 'properly' (my word, not his).
We try not to have contact because that doesn't help.
On the other hand i have a friend who's 47 and her partner is 34. They have two kids - but they met 7 years ago and spent a couple of years together before settling down to a family... i think if i had been two years younger and able to do that i would still be with my boyfriend...
When i tried to bring up my worries about all this with him he would say - it will all be OK, i just know it will. Anyway, it wasn't.
I'm not saying don't do it, i'm just saying before you fall too madly in love, try and find out what he wants from life so you can make a decision about what risks you want to take with your heart.
And if you do want more kids, you might have to talk about that soon-ish.
I just jumped in with both feet and had the most amazing 6 months. I'm not sure it was worth it for the pain i am in now though.
Good luck, whatever you decide to do.