I wish you luck. I'd say it's probably a little difficult to go this route unless you go with one of the companies that do exactly this.

Doing it privately with other individuals without having met is a far riskier endeavor. Would be easier to do if you had more time and could meet others before hand. We did this our last trip - we sailed with BEERMAN and family who we had only met on past trips. I would have been much more hesitant doing something like this having never met someone, but having met them a few times over a couple of years and communicating here..etc it was an easy choice. And it worked out great!