All redundant actually, except for the hyperX. Most any exercise is a variation of the same theme on any body part anyway, as your back workout suggest. Reps and sets not mentioned?
Wide grip pullups
Low pulley rows (wide grip)
One arm dumbbell rows
Smith machine barbell rows
Close grip lat pulldowns
Hyperextentsions
Just my personal view, take it for what it's worth..... if ambition for the back improvement is that much, would think about GVT (10X10's) of BB rows with a middle curl grip position to the lower gut, as the only direct back workout. Twice a week. Other option would be hi-pulls or DL's, as an only one exercise per back workout. Would suggest pullups/chins but most guy's can't do that exercise justice for a full 10X10's. Wide grip lat pulldowns are not on a equar par with the regular pullup/chin
Good Luck.