I suggest to be stubborn and not take the RQE curve for your spectrum.
That is only based on how leafs of just a few crops react and other effects were never taken into account.
Most things we have no idea about really and only one thing is absolutely sure: no light beats the sun so far!

You can take that spectrum to start with and run controlled experiments to see if any other configuration can beat that. These experiments are very important to get specific know how and market your product.
The more tests you run the more chance you get ahead of the competition.

You have to hand your sets to the very best and most respected growers.
They can give you the best input and are opinionleaders in the market. Meanwhile you have the results published in the magazines and forums and get a strong and trusted name. Very important after so many people got ripped of.

A good (water)cooling system would be very important.
Also you'd need a timer for the far reds and a little extra moonlight.

How much for a 200W light?
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