[quote=@NuttsnBolts]
[@Chaotic Chao] 
A co-gm may be an option. 

When you choose one though you have to have them on board so that they think and understand your vision. Many times I've seen people a point a co-gm as a moderator or someone to bounce ideas off, but when the GM is busy for a few weeks the uninformed co-gms typically say, "I dunno what we are doing".
[/quote]

Adding a bit more to this, co-GMs are worth their weight in gold, but make sure it's someone who keeps in constant communication with you and gets into the itty gritty of running the game. It helps if they have prior GM experience and are willing and capable of running the game when you aren't.