This is a great place. I've gigged there a few times, back when I was with a jazz/funk outfit. It's been a few years now, but they used to have "The Sunday Joint" where bands would play each week, as opposed to the great funky discos on other nights. It's a good-sized stage, good PA, and when I was there, an experienced and friendly soundguy.
It was never quite as busy as a Friday or Saturday, as can be expected, but it's still buzzing and they should be up dancing in no time. Unless you're sh*t
Enjoy.
edit, just listened to your band - really good stuff - you'll go down a treat.