Well, you took care of most of the obvious problems, but make sure you check the belt(s). If they are slipping at high rpm's, it could cause the water pump to lose pressure, or simply stop altogether. You also want to have your thermostat checked. Before installing a new thermostat, you should always test to make sure it will actually open when heated. The easiest way to do this is with a pan of boiling water. It is surprising how many bad thermostats make it to parts stores. Keep the fluids topped off, and you should be able to have a lot more happy motoring ahead of you.