I had one drilled about 4.5" stacked, pin about 1" over the finger line. I found it to be kinda early, so if you want more length, you'll probably have to polish it.
I will say that it wasn't the best fitting ball for me, though I didn't know it at the time. That may have had something to do with it, but I still found it to be earlier than I had wanted, even with a high pin. You might be able to put the pin a little farther than I did and hit it with polish.
SH