Poker Stats: Mac, Windows, or both?

My Poker Stats app is written in Java. I’ve successfully built and run both Mac and Windows versions. However I want to keep the launch by the end of June as simple as possible. I don’t have the resources to thoroughly test against two different operating systems. So which will it be?

My primary computer is a Mac. As I am “eating my own dog food” (using my own product) already, I figure it is wiser to launch with a Mac-only version. The only thing that could change my mind is an avalanche of feedback requesting the Windows version already.