I concur. The felt track bike is a nice looking bike and handles well on the track.
However there is no need to worry about getting another wheelset as its good enough to learn on and get good on.
The gearing is fine. A 48x15 is enough to win just about any race on the track. Remember one of the things you ride a track bike for is to learn how to spin. Cadence is huge, being able to smoothly spin at 120rpm plus will only help YOU!