Age Gap Dating

I am recently single (for about 4 months now) & I met a really great guy in the dentist office actually a few weeks ago. We had two appt on the same day, same time, about a week apart & just lightly chatted while waiting. 
The topic got to kids some how & I was gushing about my 4 month old godson, while he was gushing about his 6 year old daughter. I ended up getting his # due to him running a computer business & my laptop needs to be looked at. Later that night I looked him up on Facebook & he is 35, 10 years older than me. I figured he was at least 30 with a 6 y/o, but I wasn't expecting 35 lol! 
So, for those who have dated people in larger age gaps, how did or have those relationships worked out for you? Also, how to go about dating a single dad? I know his daughter is priority & I wouldn't have any other way. Thanks!