I don't think about it, if it happens it happens is the attitude I have.
Big wedding, it just depends on the moment at the time when I asked the lady and how much deep in love I'm in.
Knowing me though, if my woman that I would/will marry doesn't wants a big wedding, then it'd make me want to have a big wedding just off the strength of her not wanting a big one.
Destination wedding as mentioned is something I wouldn't mind.
Price ranges, depends on the amount of family/friends you want to invite and what all elaborate things you want to have at the wedding.
I would say, if you want to have a good time/good wedding, ball out, if you're cutting corners/cost, then you might as well go to the justice of the peace or do a small ceremony.
Planning could take less than 3 months or close to a year, depending on what type of person you are and the type of person that you're marrying is, most men just wanna know the colors, liquor setup, dj or live band, type of food, and how many groomsmen they will need to ask to be in the wedding. What their parents will need and have to do for the wedding, pretty much the basic setup, Women from what I've seen, have to decide on the flowers, the thingy that the bridesmaids will have to walk down with in their hand, invitations, pictures, colors, other in depth/detailed things. So it all just depends on how you and your spouse are with preparation, I think I could plan a wedding within a 2 - 4 months time-frame if I have a partner that's not so much into details.