Hey Off Road thanks once again for your inputs.
My experience differs from yours in that in the past I have increased my chins from 4 to 12 by just doing chins daily, twice a day most days, in ladders. No other exercises was needed to get there, I just kept on chinning/pulling daily and switched grips when I felt for it. I got bored, however(this wasn't a part of a training program just me mucking about to see how far I could take it), and now I haven't been chinning or doing any kind of exercise for ages, and I maxed out on five last time I checked.
I expect I could do the same again but don't know if I will get the same results doing the chins only once or twice a week, which is why I'm incorporating some submax chins into my morning exercise.
However the program you linked to seems awesome and when/if I stall at my pull-ups or need a different back routine I'll think of incorporating it! I'm hesitant to start adding band resistance and single arm rows and stuff at this point of since I want to keep my workouts as simple and "lean" (as in lean manufacturing) as possible for this training period.