genre of magazine i have chosen

I have chosen to do a Rock/Metal music magazine, because I think there are a lot of pop magazines out there which would be very hard to compete with, another reason is because rock/metal is my favourite genre of music so i thought it would be easier to make a music magazine of the genre i like the most. The one thing that would be hard competing with is the amount of advertisements they have as they mostly include details of rock gigs going on around the country or they are promoting new CD's that have been released.