Let users know how many people will receive invite

When I’m creating a hangout and adding filters, it would be helpful to know how many users are going to receive an invite. I want to add filters to find friends in my life stage, but I also want the filters to be broad enough to know that I am inviting enough people. It would be helpful if before submitting the hangout form I could see how many people will receive an invite to my hangout so I can adjust the various filters accordingly.