Aerox stage 6 decisions and help!

Hello, I have a aerox and planning to put on my streetrace 70's I also have a stage 6 water pump with extra prepellors to keep it abit cooler than standard but, I only have enough to either get the rest of the parts for the 70's and build it without the stage6 water pump (because im paying a garage to do the water pump) or do the water pump first on my aerox with a 50 parmakit cylinder, kundo exhaust polini variator etc... And then wait untill I have enough to do the 70's???? Would my standard cylinder run too cool with the new pump or running the streetrace on the standard pump be too hot????? Help guys