My 'boyfriend' is older by 19 years; is he too old for me?

I meet this guy on a dating app and we have been dating for about 5 months now.

We are cool and we manage the distance issue.

We have never seen each other.

We plan on meeting each other this coming May in Nigeria, his country. Here is my problem: I am 22 and he is older with a difference of 19 years. Also, he has a 9 year old boy and has never been married.

Even though we have our differences, we try to manage them. I have been wondering if the age difference and the 9-year-old soon is a big deal?