I don't like going much longer than a 5 inch pin to pap, just because no matter your rev rate or overall power, balls seem to get a little lazy and sensitive to backend carrydown past 5, even with as strong on the back as that ball is. But like spmc said, don't try to make the ball something it's not. If you're using a layout to tame down the backend on a big backend ball, that sounds a little counterproductive to me. That said though, you're familiar with your game, and honestly that layout doesn't sound bad at all. Just a few things to think about, but if it works out fine, I wouldn't be surprised at all. I think you've got it figured out.