It's hard to say, given that this Kickstarter probably reached peak awareness during the first day. Previous major Kickstarters [like Wasteland 2, Double Fine Adventure, and Project: Eternity] came earlier in the Kickstarter boom, and in some ways helped to get it started, so awareness didn't necessarily peak as early in their life. Having said that, I wouldn't be surprised if this hit $4 million before the end, but $5 million is probably a stretch.