@Rhonda343 Way too many red flags in my opinion. If it were me, I would politely decline his reservation. I 100% agree with your husband.
-Third party reservation are not allowed through Airbnb unless the individual joins the airbnb for work program, which allows them to book reservation for employees/colleagues.
-Communication outside the platform is strongly discouraged. Aside from potential scams, you want to document everything through airbnb in case any issues arise
-I looked at your listing and the photos are a good representation of the property. I don't see any reason to request additional videos