More lights

This is my setup. It is RDWC , 4 plants currently running two 240 watt 2x4 foot leds - looking for suggestions on what else to get and where to put them. I want to make sure I have the maximum wattage covering all areas. Picture of setup provided.

Full tent is 5x6 feet, each grow box has a 2.5x2.5 - 3x3 space in between each other

Maximum wattage isn’t always a good thing with LEDs. I thought the same but had a hard time getting used to mine. Burned a few crops until I got some advice. Turn them down and hang them high. Check my signature grow. There’s 960 watts in a 6 by 12 foot space and I had some tip burn running them 2 feet above the canopy.
If you want more coverage, another light would let you run the three of them at lower wattage and cover more area.