OK... you could use the BW as the first ball out of your bag. Depending on the amount of oil you hit, you can leave it at the factory 4000 grit surface, or, if you hit a bit more oil, you can keep at at 2000 grit.
Next, you need a ball a little weaker than the BW. I think the Big Shot can do that job. The layout is a little weaker, and it's a pearl. It should work in that condition.
You then need a pair of balls for the extremes... one for the heavy floods, which I'd keep dull at 800 grit or so. Use the same layout as the BW.
Then, a ball for the extreme dry. I'd use a label leverage layout (CG in palm, pin in 1:30 outside ring, no x-hole). A medium pearl would be good for you.
Good luck!
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pjr300
live from the Bowling Capital of the World
specs and transaction record (positive and negative) in my profile