Like was alluded to earlier, I first look at how many 2:2 loads, and 7 of them is significant. Very flat means no miss room outside and no hold area inside.
For me, I like surface on the ball to pick up the mid-lane and control the late movement better. Our eyes are used to seeing the reaction more side to side, but in this environment I try to imagine managing it more front to back. Polished equipment can get quirky, especially closer to the pocket.
People will be all over the place trying to find their shot, which can cause carry-down, yet another problem for polished balls.
Solids that you can control the backends will be your best bet, because staying out of trouble and then making spares is going to be critical. I just bowled last week on a tougher pattern and 190s felt like an accomplishment. We also moved a pair every game and so every pair transitioned differently due to people searching for the "easy" line that isn't there.
Best of luck to you. Relax and have fun with the challenge.