VISA ENQUIRY

Good day to you all....i stumbled upon this blog in the most funny circumstances and i have been well informed since reading and going through all the trend. 
I have a situation and i would like your advice on it, my fiance is in the u.s.a and we plan on getting married next year ending. she actually works and studies but at the same time leaves with her dad as of right now, though she intends to move out, we want to file for me on the basis of marriage (she will be coming to Nigeria this year) where we would go for a court wedding. based on this do you think i would be granted a visa.
i actually work right now and i wont say my pay runs into millions but its fair. i also haven't let the shores of this country, then i would also like to have any other opinion that can be helpful. we were also thinking of going for the tourist visa but we just want to weigh our options before heading to the embassy. 
i would really appreciate your response