As The Professor seems to be committed to an event on 31st October, can I repeat my suggestion that you attend it purely as an observer? Once you have a clear idea of what the phenomenon in question actually consists of and recordings to examine, it should be much easier to determine if it qualifies as paranormal and is testable within the terms of the challenge. Negotiations on a test protocol and success criteria can then begin, and a date set for the actual test.
We have been offered things like this before, and have always turned them down. We simply can't spend the time and effort visiting people to see what they can do.
We really need a claim.
, when the important part is....