Doesn't my Thread falls into this sub-category? Since I am talking about HPS and Led lighting?
Sort of yes and sort of no. HPS is the mainstream grow light used by a lot of people who don't mind paying electric bills that are exorbitant and using out of date technology. (you can see my bias for LEDs?) When I hear people going on and on about HPS and 1000w this or that, I kind of have to laugh. Unless you're running a professional factory setting, like 100x100 or something, I just can't figure out why anyone would go to such lengths to waste so much energy on generating excess heat which then takes more energy to remove via fans and etc.
You aren't going to get enough HPS for that area with $1500. I don't see that happening unless you cobble together the used HPS systems from what nine new LED users are selling on Ebay. It's not going to happen. And for the investment those HPS would require, I would again encourage you to research quality LEDs. They do and will pay for themselves in yield and economic running times.
It sounds to me like you're looking into a major operation, which means you're thinking about the future. If you're thinking about the future, you should consider this axiom. There's cost, low cost, and no cost. No cost is the sun. Low cost in the long haul--like a year or two--is LED. HPS will always run hotter, cost more, and need constant replacement of bulbs and ballasts and that adds up way faster than investing in a good LED upfront.
Also, HPS can be a fire hazard if you don't know what you're doing.
Earlier you asked about the difference between MH and HPS. That alone scares me enough to suggest that you take your 1500 and invest it in a one, two, or three quality LED panels. Run your first grow on those LEDs. Take the profit from that grow and invest in a few more panels. Do this a few times and you'll have a great and energy efficient room. As an added bonus, you'll be saving money on monthly electric bills, which means you can reinvest it in LEDs
You can use a little left over of that 1500 to buy a few nice CFLs to get your clones started. By the time you get your second order of panels you'll be ready to flower those clones and you'll be underway with a perpetual harvest plan. Just keep some clones rooting and vegging under CFL and bring them into your flowering room
You need to take the diagram and cut the grow room in half or in thirds. You'll need have or one third of that space dedicated to vegging clones.
Honestly, it sounds to me like you're trying to build a grow room that costs 10-15k with only $1500. Ambition is great, but so is learning to be a gardener and professional, compassionate greenthumb before trying to build a rocket on a firecracker budget.
Have you ever grown before? Inside or outside? This is important. There are lessons that need to be learned. I learned the lesson of efficiency and science once I got these LEDs. Traded all my HPS to a buddy for a row boat. Yep, all those HPS and I didn't care any more. Got like a 200 dollar boat for all those wornout ballasts and bulbs and etc. HPS is the way of the past and every day more data comes out to prove that to us.
People in love with HPS are a lot like people who still think that VCR tapes are the best way to view films at home. They are wrong. Technology scares people, and several times LED technology has looked like BETA tapes because they didn't have it figured out yet and in synch with the natural biology of the plants. It's a lot more like DVDs now, and it's only going to get more like Blu-Ray in the next year or two.
You should go onto the LED Newbie forum and say "I have 1500 and want to grow. What should I buy?" Then listen to the people that are doing this and have been doing this.
In growing, space is the easiest thing to come by. The bigger the space, the more complex the system. You have space now, and very little budget for a system. Start smart, and good luck.
