Thank you for the advice. I spoke with the faculty administrator today. She's spoken with two profs at the school who seem like the most likely fit, but neither feels they have the expertise to supervise my project. I'm not sure if joint supervision is on the table at this point, but if neither of these professors are willing to take on the project I'm not sure what options are left.
Now that I have a little information about where everything is at and have processed it all, I'm going to tell my partner tonight. It'll probably ruin his birthday, but maybe he'll surprise me.
Thank you again.