As for having children, expect to be a single parent. The bottom line is that you are setting yourself up for difficult times ahead. I'll paste a URL with links to all of them at the end of this message. Oh well, I'll just pretend she's not mormon and see what happens. Even with the demands on his time, the man took the time and made the effort to post a profile on a dating site. Read that entire speech and you will see a slew of racist statements.
And unless they are total cretins your ward members will love him too. Masculine attributes attract healthy, beautiful women, no matter where they come from. I prayed about whether to marry this man, and I felt and still feel strongly that it was right for me.
If you really care and think this is the lifestyle you wanted then go ahead. It is not something that should be taken lightly. Love does a lot.
If he says he wants to keep things casual, head for the hills - he's the latter and he doesn't appreciate you. Before I met my husband I had dated quite a few members and some relationships were quite serious but I never felt right about it. I also expected that my spouse would be temple worthy and that I would get married in the temple, which was not the case. I was lucky with my TBM. The doctrinal and afterlife issues around a non-temple marriage are an entirely different topic, and one that I am personally much more at peace with than my questions about how one might make an interfaith marriage work in this life.