Generally speaking most get more yield off Coco, Pro-Mix, or one of the 100 methods of Hydro.
Also, if you're chooping 30 days early based on trich production, then maybe you have the wrong idea of cloudy? Or your eyes?
Under HPS my old lady used to bug cuz an 8 wk strain would be done at 8wks. Receeded hairs, mostly cloudy, lil clear. But then, the next day, tote & chppers in hand, i would go in & see all new growth.
I called it the second growth spurt & it happened primarily under HPS. Then I'd go another week with all new white hairs bursting through the orange, receded hairs.
End result, extra pound or 2 id guess & cloudy with some amber starting.
Strain dependent but most did this n id have to here : "You n your GD second groth spurt" cuz being a woman, she wants that doe yesterday, ya know.
Chopping early is why you're not getting the 1.5 - 1.75 off each light.
MH will increase bag appeal, trichs & aroma
when installed the last 10-14 days of flower.
I top the plant once, usually right out the cloner, then do a series of pinching new tops growing to keep it even & make it bush.
I would Dial it all in before going LED unless you got some doe to go. Even better, start by buying supplemental leds to boost your hps spectrum & corners. Then, later combine the led to make one unit & try that vs. Your hps. Most to switch after seeing the difference.