You will be able to buy that spectrum very soon in a strip format. Because it's done in strips you can then use monos or more focused phosphor converted colours to blend the spectrum to what you want in particular. If you want more red for example you could use just a bit of PC red to completely transform the spectrum from a 4000K to a 3000k. By pc red I mean this
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It doesn't take alot of monos or focused pc colours to change a spectrum by quite a bit. Efficiency does drop when doing things like this, but once you know for sure exactly what you need then you can plan you next build and be absolutely sure that the spectrum is perfect for you and the strains you want to grow.