There you go previous threads full of offwidths and wide cracks. There's a variety of other crack sizes on the bouldering thread, but some good offwidth boulders can be found there. Also I threw in some hand and finger crack threads too.
Didn't mean to be a buzz kill by posting all of those links. Anyway if you want a circuit with routes reasonably close to one another then I think Cathedral Ledge and Pawtuckaway are your best bet. Although Raptor Roof and Walking the Devil look really cool so you should do them too, if you're up for the challenge. Some of the routes I'm listing are more chimney than offwidth but they're still wide. I've only done like three of these routes so don't ask me for advice, I just like obsessing over them.