That's a lot for 1 light it requires skill and experience. I am studying on triacontanol now, maybe I use it on next grow with co2. This way maybe 3-4 Oz are achievable
If you have 1500 watts of light you shouldn't need anything but healthy plants to pull a a couple pounds like
@JoeBlow5823 already stated. 3-4 oz is already achievable. You're not going to shortcut anything with chemicals and gas. Just focus on learning how to grow a plant healthy from start to finish and everything will fall into place.
I suggest skipping the triacontanol forever and not bothering with Co2 until you get a couple really good grows under your belt. Co2 isn't just going to magically make your grow better. There are a variety of factors that must come into play before you'll see any benefit.
In that space you have I would grow less plants and they would be photo's. I'd use a couple training techniques, veg for around 6 weeks, and flip. The thing with autos is that you can't control when they flower. Some flower faster than others and may never get to be the size you will need them to be to achieve the yield you seek. With photo's you decide what size and when the plant flowers. I don't know how much your current grow will yield but you have the light to consistently pull a couple pounds. Pgr's and Co2 are not the answer. Instead of studying triacontanol you should be studying basic plant science because it applies to cannabis. Having an understanding of how a plant grows, it's different needs, and how to supply those needs is going to more beneficial than spraying your plants with triacontanol.
1000 watt CMH and 2x 240watt quantum boards. I am not at expert level to do 0.6. I feed them sensi bloom A/B and carboload also I start the overdrive and guano extract after 2 weeks. I see people combining lots of nuts and hormones to achieve 1-1.+ per watt or Auto ultimate 1kg 1 plant. Wtf.
You don't need to be an expert to do 0.6. Don't get caught up with dumping a bunch of stuff on your plants. That's not necessarily a road to success. You said you fried your plants once don't do it again.
Nutrients are an important part of growing a plant. But where those nutrients come from isn't important to the plant. Inexpensive water soluble nutrients Jacks, Masterblend, or VitaGrow, will produce just as well as the expensive brands with 12 different bottles of stuff.
I use cheap nutrients and 600 watts of HID. All I do is plant them and walk away. Blumat gravity fed drip system and the lights on a timer. I just wait for them to finish. I'm not doing anything expert. I'm basically not doing anything. I give the plants light, water, and food. That's it. I spend less than an hour a week tending to my plants when I do just a flower run. Twice that when I'm doing seeds which has been most of my grows lately.
The more I simplify my growing process the better the grows get. While others are constantly adding things I'm constantly looking for what I may not need to streamline the process even more.