I'd say the ball will be/do too muchz. 1L is a strong layout, and you need oil with the UI, even a polished one, to make it work. I'd rather go with 2L or even a weaker layout, or you will never get the ball to the pocket "alive" with a decent release.
Remember: the UI has basically more grip than a pearl ball like the OI or ZC. Therefore, with your style, I'd consider it even with a polish to be a medium-oily ball.
As a ball alternative, I think an OOB Ambush would be a better base for what you want to do, but even this one might be too strong. Alternatively, a Nemesis with a high grit finish could be an option, too, since it has a weaker solid PK18 coverstock, a higher RG for delayed energy delivery and less flare than the UI.
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