This is what I have and I position it a little behind center . Then I have a Mars 1000 for the front for and a half of the tent . The overlapping light sources create some really good numbers in the tent . Technically u can just use the 600 though just get a good wide spread hood
I found a 600 in a big hood was Not nearly enough photon density. Even the smaller Solis-Tech big hoods, designed for a 6" exhaust was to big.
I used the Medium sized hoods. Wanna say they were called XtraSun. Really liked the distribution on them & reflector design.
Had many overlapping so hard to say the exact coverage i got from them. A good 3.5' around I'd say.
But that gave much better par #'s & depth to the density.
Even had a very small hood for high intensity. Which covered the same area as the Medium & large hood almost. Just had to be hung higher.
600w HPS, over x1 plant with 2 month veg gives an average of 1#, strain dependent. 3.5' around, allowing a little breathing & working room in the 4x4 tent.
A few 14w led Flood lights from Home Depot in 5k will be beneficial to your HPS & your plant will thank you!