If you wanted to stay with Brunswick, and get a ball from the current lineup, I would go with a Copperhead over the Twisted Fury Solid. The Copperhead comes in at 800 grit sanded (but can be adjusted to your liking), and has a much less angular breakpoint shape than the TFS. Since you are not speed dominant, this will give you a smooth read coming out of the oil, and help eliminate some over / under reaction and lessen the tendency of the ball to "squirt" in the oil.
As far as drilling recommendation goes, I would go with a pin under setup just because you want the ball for heavy oil, and this will keep the ball more rolly, and less skid / flip. I would keep the pin to PAP distance to 4" or less, and leave room static weight wise so that you can fine tune your ball reaction with a weight hole if needed. Good luck.
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James Goulding
Moore's Pro Shop
Ball Driller / Consultant
USBC Blogger