Sky Dragster didn't wow me, but it was a decently little ride. Maybe adding a racing component will make the ride stand out a bit more.
My worry would be capacity. Maybe it was just Skyline, but they didn't send the next train out until the previous one returned to the station. Each run took 30-40 seconds and each bike seats 1-2 riders. Assuming each bike has 2 riders and each dispatch occurs every 30 seconds, that's a max of 240 riders per track per hour. But I'm guessing a lot of people will want to ride alone to control their own speed. How busy does Mirabilandia get?