The write-up is absolutely perfect! I would say they can win both competitions, unless you want to make a third category for those people who want to enter a matching set of avatar and signature and then people can enter one or as many categories as they want?

As for the go ahead, all you need is one of the FC presidents to approve you posting it on whatever date you/they'd like and you're free to go ahead with it! Nice work on this! I'm really glad the JKRFC has you all! I see this FC improving beyond my expectations with you all on board!