Is my question here:
off-topic? If yes, where would be a good place to post it?
Mainly it is off-topic as "seeking personal advice."
There is not really a place to ask it. A part that might be on-topic is to ask for recent work on such problems, which is a mathematical question, and related who is working on this now.
To see if somebody could and is willing to supervise your work specifically is a question that you would have to sort out via direct correspondence.