Sensi nl5 x haze questions

I am planning to grow 4 sensi nl5 x haze plants from seed in a 1x1x 2m tent and am worried about the reports of stretching in that strain.

I want to get the best yield and potency, but I don't want to run out of head room.

Should I use 7.5L or 11L soil pots?

Can I control the height or help the yield by topping it once before putting into flower?

I can also do some lst, but I'd rather not get into supercropping after it's gotten too tall.

Will getting root-bound in the smaller pot create nutrient or potency problems?

Also, I read that this strain is longer flowering. Should I plan for a full 12 weeks of flowering or something else? The info states 65-75 days, but they tend to be optimistic.

Thanks for any advice.

Does anyone think that going with 5 x 7L pots versus 4 x 11L pots in my tent would be a better choice or not?
I'm thinking primarily yield and height, but also will a smaller pot size tend to introduce nutrient issues or root bounding that can then affect yield or even potency?