For what its worth, I like your multiple GM approach to the storytelling. That seems like a gem of an idea. Combat and stats though? Yeah, I'd tend to agree with Primal's input. Playing truly random characters is almost inevitably an issue for roleplayers. I think you'd do better to invest some time into learning D&D, and adapting a specialized campaign around that. 

For what its worth, 5e has a free starter set:

[url]http://dnd.wizards.com/products/tabletop-games/trpg-resources[/url]

Its a really easy system to use, and even if you don't want to actually use it, their character creation is simple, and very refined. An enterprising roleplayer could mine it for all sorts of ideas.