2nd grow, a few doubts

I've started my 2nd grow this month.
I'm growing 6 plants (all of them from feminized seeds):
- 2 Early Widow
- 2 Haze Mist
- 2 Jack La Mota

The room is 1,4(w)x1,2(d)x2(h) meters.
They are almost 4 weeks from seed, 2 of them under a 400W HPS (before they were under 4 cheap CFLs).

My initial idea, was to grow these in 11L containers and then top 'em all trying to clone the tops and put 'em in my old 7L containers. I also planned a SCROG for the 2 Jacks.

Later, I've been thinking of fimming instead of topping, as it will grow more colas, but that way I wouldn't be able to clone the cuttings. I still could take cuttings from their lower branches or something. I could also try LST but with a space this size, wouldn't it be a waste? What about supercropping? I did it accidentally to one branch during my first grow and it seemed to work fine. Still, I can do it even if I do any other technique, except for SCROG.

I'm really stuck here so any suggestions from more experienced growers would be appreciated. Thanks!

Come on! No suggestion at all?

You are asking about a lot of variables here. There are too many things discussed or asked in your one post to be discussed in one answer. You are basically asking if you should clone, supercrop, trim or top your plants?

I'm just trying to figure out which techniques are best for the space and light power I have. Plus, which ones are more productive and easier to perform. I know it is a bit vague but I'd like to hear some opinions as this is only my 2nd grow and now I would like to try some... for example. won't there be a height problem if I SCROG 2 of them and not the others? If I top/fim incorrectly what will happen?