hps are actually the most efficient (maybe after led) thats why theyre used in streetlights, theyre less heat lumen for lumen compared to cfl etc just most dont put in equivalant amounts of cfl to compare becuase the heat would be ridiculous. you keep the ballast outside the tent aswell while cfls have it on every bulb. 1000watts of anything is gonna be hot.
but yeh you need an extraction fan with that definately, get it as soon as you can things will only get hotter.