I have two friends who have both gigged extensively with AC15's ('90's versions) and they are more than capable. Both play alt country style but both have pretty loud backing bands. If the new ones are anything like the older ones they will surprise you. Great sound too.
I have a 90's w/a blue. It's my favorite amp. It sounds great for classic rock tones. Not that it needs it, but every fuzz I put through it sounds great as well. It's loud enough for gigging (unless you play at Heavy Metal volumes). It helps to put it up on a chair. You can hear it better. I used to have it on the floor with the sound blasting past my ankles and I had to turn it all the way up. The tone is great there, but when it's on a chair I don't need to crank it so high.
Putting it on a chair/table is a great idea and is usually overlooked. I do that all the time with small amps. I've seen a lot of people not play out with smaller amps because they say it's not loud enough when, in reality, what is happening is they are getting pelted in the back of the knees. Put the amp up - it's much easier to hear both for you AND the audience. Fantastic suggestion mickey69.
Both North Coast Music and Sweetwater Sound have them in stock. The former offers free shipping; SS is $35. However, SS has a thirty day return policy, which is probably worth the extra dollars. Also curious re the wight, as the ACC30CC's were prohibitively heavy.