Sog, Scrog or one bud ?

Hi, i have a grow room 8'X9' with 1000w hps. i dont want tall plant, maximum 3 month per cycle. I have Super critical and moby dick 2. what technique will give me the best yield?

my friend say its possible, in one bud, if i start in 12/12 to get bud in only one month from clone, but my genetic take about 70 days to be ready. i dont think its possible can you confirm?

In short it's not possible to get buds from a clone in 30 days no matter what you do or whatever strain you're using.
You'll need another light for clones as well.
I suggest grabbing another light and rigging up a small veg/cloning area.

Yeah your friend doesn't know what he's talking about.
So you have a 10 week strain and you can add a week for stretching between veg and flower, that doesn't leave you a lot of time to veg if you want a 3 month turn around.
Its going to be a numbers game, how many plants are you comfortable running? You can clone both plants and have lots of small plants flowering as soon as they are rooted (SOG) or you can take the two you have and train them with LST or top them or various other methods and veg them for a 6/7 weeks. LST will produce short plant with more colas. All training takes time. Your 1000w light is only good for a 5x5 space so you want that space filled. You could probably SCROG both plant in a similar time frame. I don't see any method that will be ready to harvest in 3months with a 70day strain though. SOG would be good but your plants need to be fairly big to take so many clones from them. you would need 25-100 clones to do a SOG(1-4 plants per square foot). The less you have the more veg time.
If your happy with that plant count then keep your 2 plants as mothers for a couple of cycles and you could have the same amount of clones ready to go into flower as soon as the first lot are harvested. Thinking about the long run and not just one harvest this would be the quicker turn around.