Well, if the trip is in June and you get paid in 2 weeks, you should have plenty of time to get everything before the trip if you hold out. My main concern will be the condition of said "used" camera. How many shutter cycles, cosmetic, etc. If it is an open box, but otherwise new; than yeah. Other than that, just wait. If you are shopping for a lens to shoot the races, get something fast that has IS.