Question

So this guy I am talking too his 27 and I'm 19 he's has always been in our family every since I was in diapers well he has 3 kids of his own and I have one of my own well he wants too take me on a date and see where it goes well I don't know what too do:( any opinions?????:) like is he too old for me or what??  Has anyone dated someone with there own kids and you have kids of your own is it hard?