On this type of back program the Dl should be preformed first, as the ultimate compound movement. If your preforming it last you are not really doing it,or yourself, full justice to the benefits of the exercise.
People overlook the value of bent over BB rows as a great spinal erector developer. Not only for strength but muscular development, in that it can add a thickness to the lumbar region. The whole vertebral column can become stronger, as well as th glutes, hips and hams strongly. Hits the whole chain of important rear muscles.
Pullovers, either straight or bent arm, work well with a lat program. Extra rewards seem to come when they are done before a heavier compound movement, pre-exhaust style. I, and some others I have worked with, have done a set of straight arm pullovers, followed by the bent arm version and lastly BB rows without any rest between sets. Exceptional pump, exceptional results. Have also included pulldowns, rather than BB rows. With chins I just use one pullover version before the actual chin. Good Luck.