150 or 250W DE for 20" water depth?

[banditpowdercoat]

I am still unsure of how much light I am going to need. 60" tank length, 24" wide, and 20" water depth. Would 2 250W be enough? Weighing options here. I like a canopyless tank, but lighting is more expensive. I am considering a Coralife Aqualight Pro 48" light. 2 95W PC, and 2 250W DE. But tank is 5', light is 4'. Would it be enough? So many choices, but not enough money