I think it's going to depend on the team we're matched up against, how Al is playing and Timelord's health.
assuming Miami in the first series, I think it'd be White, Smart, Brown, Tatum and Al in order to provide a tough defender on Butler at all times. it also puts a tough defender on Herro and Lowry to keep them in check. problem is Bam will kill us on the boards. I suspect we'll see quite a bit of Al and Timelord together if Bam runs amok so we can keep him off the boards but that means Brown/Tatum will have to exert a lot more energy defending Butler and Herro. My hope would be that no matter what lineup we put out there can run Miami off the court as well has hit a respectable percentage from outside to open up the lane.
if we somehow get atlanta in the first series, I suspect we'd see the same lineup used the most -- not necessarily starting but on the court together the most during the games.