I've decided to repost this thread in the Game Planning forum, so you can delete this thread.

How long will you need a Co-DM for? This one dungeon or forever onwards?

I don't know how long I'm going to need help, but I would say that I would prefer a co-GM who is going to have some free time for the foreseeable future. The game is going to run in two parts, and even though the first part is over halfway done, the second part is by far the larger project.

Thread continues here.
Closing this thread by request and to avoid redundancy.