You should go. Book in advance but beware it is still very busy. Russell only go if you can find a quiet time. Maybe first thing on a Tuesday.
Some of the classics. The blockbusters. Which is always nice to see.
This exhibition isn't just about Van Gogh though. As the title says, but I hadn't really noticed, the exhibition is about Van Gogh and his time living in Britain and how that influenced him. So there are other paintings, prints and sketches from Britain at the time by other artists. They are very interesting but may not be what you are expecting.
The Tate have constructed a well told story about Van Gogh. I learned more about him, which was good.
It's very busy. Of course. But you should still go.