which spectrum to choose?

Im fairly new to LEDs and am looking to purchase optic lighting 250 watt vero29 led today and i see they offer customizable spectrum of 3000k, 3500k, 4000k, and 5000k. Was wondering which one is best for my 3x3 grow tent? i want to use it from seedling to flower, was hinting towards 4000k any help would be appreciated as i am trying to make purchase today.

+1 4000k for the whole circle

Now im confused... i thought it was 3000k for whole circle.

3000k only for flower, in veg produce a lot of stretch for me

Actionbone said:

3000k only for flower, in veg produce a lot of stretch for me

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I've heard from fellow growers that 3000k does cause a bit of stretch

At least for me in my sativas/hybrids it does maybe indicas grow well