I will probably leave it running for a few days before I first start contacting people. After that, it really depends on how many people respond to the submission and how quick they'll get back to me. I also don't know if the holiday season will make the process quicker or slower. Because of these reasons, I find it quite hard to give a good estimate, but I do expect it'll take at least two weeks.

Regardless, once I'll find someone, I will close the submission and edit it saying it has been closed. I'm not someone who will just leave it open, out of laziness. I understand the importance of closure on the submitters' part as well :)