would it be best to use mh/hps with t5/led sub/sidelighting for the full spectrums with targeted areas for maximum performance? including a flower initiator (730 nm used to induce the sleep cycle approximately 2 hours earlier then normal)
Woah someone's getting hardcore!
Scientifically speaking, "yes". As long as you provide equal amount of nutrients, C02 and H20 as you do light.
Plants need all 4 of these things to grow, missing one will incomplete the cycle and your wasting the others.
This is how you "super-grow" by overplentifying (my word) these 4 ingredients for growth.
Lights from above don't get to the lower leaves. That's why you sometimes see reflective material around and under the plants.
So lights on the sides
would provide penetration of light to places not able to from above.
MH/HPS are the best if you have the money for
them and their cooling; but if you want to save money and time, you can just trim them and tie the branches out for maximum exposure and do with what you have.