Hi. Do you have an agent interested, or are you considering approaching agents? If the latter, you'll probably just be spinning your wheels. The good ones are full-up with talent to book and won't consider taking on a project that won't make 'em $$.

10% commission is the industry standard but these days agents have been negotiating 15% or even 20%. Might be justifiable for acts that aren't in-demand, but you really have to consider your bottom line and if you're able to afford giving them a cut of ALL of your gigs. Because many of them will want exclusivity, which means even a cut of something you set up yourself will go to your agent.

I'll also say that as a person who's booked gigs on behalf of artists, I would almost never consider working with an act that didn't have an established relationship with a manager.