Building my own LED panel, best arrangement question?

Building my own panel, with switchable veg and flowing COB's. Using the cree CXA 3050 in 2700k, 3500k, and 5000k

I'm gonna build it in 200w panels at 50w per COB. Which would give me 4 lights per panel. I was thinking 3 2700k, since I've seen theflowering success of these and 1 5000k, because of the spectrum and itd be great for veg hoping it'd give it that great blue like the great grows I see with mh/hps combo grows. It'll be 1 2700k and 1 5000k for veg and switchable to include the other 100w of 2700k once I flip to flower photo period. Does that sound good or should I do a 2 5000k and 2 2700k per panel? And just have 2 5000k for veg and all 4 on for flower?

1 panel is gonna the 3500k because I have yet to see it in action but have seen many people speculate about it. So I'll do a comparative on it. Same setup. Should I do 2 and 2 or 3 and 1?

Any input would be great.
Gonna get this ready to grow my DrGt ECSD seeds with.

Sounds like a sweet setup. I havent seen all white LED results first hand yet but if you want to keep all your COBs in the warmer range you can add a luxeon M blue which would increase the efficiency of the lamp because it runs at 57% efficient depending on how hard you drive it. If I understand correctly there is not much penalty between 3000, 4000, and 5000K but the 2700 starts to suffer in terms of efficiency because of the additional or different phosphor used.

Ahh, okay, well, I'd have to look into that blue...but buying all CXA ' s would be much easier. LolI think I'm gonna just go with 5k and 2700k, and do one panel with 3000k's and see how it performs. Should be built within the next month. Need to order the parts. I just didn't wanna order till i found people's opinions. But it doesn't seem people have any when it comes to COB ratio. So I'll do 3-1 AND 2-2. Since there's a journal here on 2700k and I'll just add the 5k to make up the blues it lacks. It seemed to veg well, and flowered great. I'll see which ratio is better. And which color performs best.

I hope yopu keep your post informed as I too am using a 540W led. It only has reds and blues. I'll be interested in your success which I hope is plentiful. Keep it green. I am a newbee so I need all of the help I can get.