180 seats on an A320 single class config is ok. 30 rows of seats. I can't quote seat pitch but some airlines play with it by installing coat closets, modifying the galleys, installing larger seats etc and reduce the coach class pitch accordingly.
Isn't the 180 single class config the same as Jet*?
As an aside who will be the first 10 pilots to crew it? mmm.
I wish them all the best.