I think it depends a lot on where those differences lie.
She is very different than me on many subjects
What subjects are these? Political? Social?
When it comes down to your core values, are you similar? I find that people who are more intellectual are attracted to others with different views from them because it sparks discussion, and sometimes a bit of a challenge to see if one can bring the other around to their way of thinking. However, it also takes a lot of respect to maintain this long-term. You need to be able to discuss the differences, but there can be a fine line between discussion and argument and you want to be careful not to cross that line.
I guess what I am saying is similar to what DesertSmile has already said, although wording it differently. At any rate, best of luck to you as you explore this new adventure!