I don't have a problem with states going higher than the federal minimum wage. That already happens.
ILA - If the minimum wage had kept up with inflation, it would now be $10.71 instead of the $7.25 that it is. So there's a number for you. At least $10.71 an hour.
http://www.raisetheminimumwage.com/facts/
And if states push it higher - or cities set living wage standards higher - based on local conditions, that's ok by me.
SF, not too worried about inflation spiraling out of control; companies are sitting on a lot of money right now, they can afford to pay their lowest paid workers a bit more.
In terms of young people being the main ones on minimum wage - they're about half of them
http://www.bls.gov/cps/minwage2011.htm