I agree with getting the mass bias near your VAL, but with that top weight and the way the mass bias is situated, you're gonna have a pretty big weight hole. Otherwise, I think the pin under the bridge is a very good idea. The cg will end up down and to the right letting you go with a low balance hole, giving it a very good midlane reaction. I think it will just be a matter of getting the surface right and you'll have a winner on flatter patterns.
--------------------
Where is the bait? I'm goin' to jail!!! - Chocolate GAYzer