Dude, are you serious? About 2 months ago you were telling everyone about chicks you met on the net fighting over you and now you want marriage advice?
Stop while you're ahead. You don't marry chicks you met on the net after 3 months.
Enjoy being young and take your time. Marriage is no race - it's a marathon and you will never make it if you run too fast too early.
I'm just recently engaged, but I've been dating my fiancee for 3 years and we are waiting a while to get married so we can save cash.
I'm sure you will get your balls broke on this thread, and you should. If you are thinking about marriage already, it's not love, it's an infatuation.