"Hall" has been trademarked. What make you so confident the owners of those trademarks couldn't take action against you, and leave it up to half-chance that it could be taken away from you (even though you may not have infringed against it)?
Because we filed the trademark
You have a 1b intent to use application not a registered trademark
http://tess2.uspto.gov/bin/jumpto?f=doc&state=4010:55oou...
That being said obviously the trademark app is needed. But the fact that you are using the domain name and that there are actually multiple trademarks for "hall" and that it's a common term is the thing that offers the real protection here from predators.
Your attorney should have not filed this as a 1b though. It will take longer to get the trademark issued.
They should have advised you to simply use even a site mockup or beta site to create a screen grab for the application. (I have 21 registered trademarks).