You know there is a lot more to plants than you know. Your cells evolved from plants. Knowing plants is key to knowing where we came from. Hell we have ribosomes in our cells that are made up of proteins that originated or evolved from bacteria. It is hypothesized that ribosomes were bacteria living inside a host cell that became apart of it.
Plants are the most amazing thing on earth; they're so creative when you delve into the micro world of cell biology. They're so smart they adapt to insects and defied gravity. They are the longest living organisms on earth and are responsible for our atmosphere and all the organic fuel deposits all over the world.
I believe you have not done enough research on spectrum and photosynthesis to build an adequate light source for plants. HPS and MH bulbs cover a wide wide spectrum, so does the sun, plants need all types of radiation to possibly produce the right proteins and tannins/flavanoids/akaloids/ect. UV light triggers proteins and cells to produce more THC and SAP and RESIN. What other nm of light triggers certain parts of cell DNA to affect how they grow.... Hmmm? Light hours does, 12 on 12 off, so does the red spectrum. Introduce UV and White light then watch your plants do well UNDER LEDS!