First time led would love some opinions

Okay guys so my next grow I've decided I want to go led. I've been using 600w hps but im over the heat and the electricity bill it costs me. But anyway after doing research I really like the area 51 lights, from what I've read they seem to be one of best lights out there. So here is my set up I have a 4'x4'x7' tent I use and I'm trying to decide what light set up I want it what the best combo would be. Should I do 4 rw-75 or 2 rw-150 or 2 xgs-190? The only thing that scares me off about the xgs is its only white light but from what I here is it does well in flower. But please I want to hear everyone's thoughts and opinions. Thanks!

I have a grow area similar (4x3), but I opted for a black dog.
I can not give you any specific info about that particular light, but what I can tell you is that LEDs Still generate heat. Not as much as HID, but still enough to make the grow cab hot. I am assuming you have ventilation if you used to use HPS, you will still need that equipment.
I was in the same boat, thinking it would be cooler and easier, but soon found out I had heat issues. (All documented in my journal)