Ok so could I keep the water temperature around 70? Or do I really need to dish out the thousand dollars for a chiller? I have one on the way and i need to know asap.
That's going to be the high range for them. I'd get a chiller to keep it a bit lower and be able to control it if it gets warm in the room your tank is in.
I also agree you should have the tank up and running correctly prior to adding one, but since it's on the way make sure you keep an eye on that temp and the shark.