The further left from Bookends you venture, the harder the climb. I stayed close enough to Bookends that I used the crack holds there 2 or 3 times. The climb is at least a 5.9, but if you go further left it is somewhere in the range of 5.10 C or D.
I rated this a G because I top roped it. However, if you trad climb this, it is an X. I saw no protection opportunities, unless you plugged pieces into the Bookends crack.