I personally don't like wikia, due to it's 'ad central' look. It's... also not the most friendly page in terms of navigation.
I think starting something fresh would be good, as well as including tips and tutorials for the editor that will ship as well.
Yeah, that's why I don't like wikia. I also think that it is far too early to make a wiki. We don't really much, just a thread with some steps we an copy and paste if someone can't figure out how to complete a quest.