The deal was over 1000 theaters, more specifically they've mentioned 1500, although that may not be the case anymore. It's likely going to have atleast two weeks, that seems to be the norm. We still don't know how this controversy is going to affect the BO performance. African American audiences are a powerful demo in the domestic BO. They usually support mainstream films catered to them (a large turn out on the opening weekend) and this film has lots of publicity (good and bad).
I feel like this film will have a respectable opening weekend, 12-13m and fairly average legs to get to a 34-35m total. Apparently, it's more audience friendly than 12 Years A Slave and takes inspiration from Braveheart, which was a pretty big hit with audiences back in the day. So who knows how far WOM can take it.