In the immortal words of Charlie Papazian, author of The New Complete Guide to Home Beverages; "Relax, Don't Worry, have a Home Beverage". In other words, Keep is simple, stupid (KISS).
I've organised or helped to organise a number of events for small gatherings of people I've never met online. Such events are always fun and seem much easier in hindsight then during the actual planning. The ends however do outweigh the means though. So if you ever get the chance to do this, do it. You're going to love it.
If during the cross talk and planning you feel overwhelmed with the small details of things, just "Relax, Don't Worry and have a Home Beverage". Things will work out and the furries will toast to your honor for putting something together. Thats my pep talk for any future leaders out there. Now go out and have fun.