d3track said:
this is pretty typical
pulldowns to warm up
deads
hammer iso-row
low pulley row
chins
drop the hammer iso-row and low pulley row - if you want to get big, you'll get there faster by using free weights and ignoring the machine stuff that serves mainly to waste recuperative capacity.
Deads - core exercise unless you want to supplement some other variation (high pulls, power cleans, pulling from the hang etc..). Pulling from the floor is fundemental to full body growth and development. Consider it separate from general back work.
Rows - use the traditional barbell - you can use more weight and more weight applied to the body produces more results (assuming free weights are used and movements are full range). If you have trouble combining them with deads you can do deads on a separate day or do these first. With a bit of rest in between they shouldn't have a major impact on your core pulling (unless you can row with a serious amount of weight).
Chins/Pullups - forget the pulldowns unless you can't pull your own weight.
Warm-ups - start light - no need to throw in another exercise.
All other work - unless you are rehabing an injury or have a severe deficit somewhere that is compromising your other lifts, there is no need for additional assistance work.
The KISS principle is fundemental. You can only progress in a limited amount of things at once (like in life - to be good you must focus on a smaller number of activities). Pick the best ones and stick with them for a period, focusing on gradually increasing your abilities at the specific exercises. I'd also adivse training them twice a week in a heavy/light or similar fashion - but watch the total volume you are using in the week. I don't know what the rest of your program looks like, but you'd do well to use this principle with all your body parts focusing on a few core exercises and eliminating the crap.
EDIT: BTW, there is such a thing as genetics. If you don't have low attachments to your lats, you're never going to get the bat-wing effect. All you can do is make them bigger/stronger, you can't redesign your body.