I would put up a partyfinder, simply so you don't go through the dutyfinder. That way, you won't level-sync when you enter and can do the dungeon at lv.60 simply for the story.

If you want to sync and actually handle the mechanics, that's going to be a lot tougher. I'd probably shoot the idea around my Linkshells and FC to see who was interested. Put those people in to a static group and then put a pf or df up. At the very least, it's easier to fill in 4 spaces than it is to fill in 7 others.