If you decide on that schedule, I would do this. On your "back day" do speed deadlifts with about 70% of your 1 rm use an over hand grip and this will strengthen your grip. Do 6x1 first week 6x2 second week 6x3 third week until you get to 6x6 then start over only add 10lbs.
On your deadlift day do some max effort work. Work up to a 3 rep max then do single leg work. Bulgarian split squats, step ups, or lunges. I would bet that this would help you bring your deads up. I don't know what your workouts look like now but it is usually the basic things that really help.
If you want to add mass eat your ass off! Then drink milk half an hour later and eat pop tarts later. David Barr suggests the pop tarts and Randall J Strossen suggests the milk. It works.