so i know im definatly not doing 28 plants if i end up growing the a fewer plant setup... no worries that your math was off by .2x.2 meters bro... it might mean the difference of 4 plants in that example math i did...not a big deal... just a guide line i was sorta using as an example to make sure im figuring things right... actually... now that i do the math.. that .2x.2 meters made a much bigger difference.. lol this is the nice thing about doing some of this before i start blazin for the day.. the cloud isnt as thick to work through..
haha my maths was off n i wasnt shtoooned 
1.2m 1.2 = approx 4ft x 4ft = approx 16 sq./ft.. which means each of your girls gets 4 sq.ft....
63sq.ft (my room) divded by 16sq.ft (your room) = approx 4
4 plants (your setup) times 4 (size diff between our rooms) = 16
16's definitely a more manageable number to work with than 28
so.. if you can hold 4 - 5 foot tall girls in your tent you would fit 16 5 foot girls in my setup... now this sounds much better... amazing how much that .2m made a diff...
id maybe think about a couple less than 16 just so you can actually get in to tend to them, its a bitch having to lift them out to bend them n then put them back in in height order etc, n I've only got 4 haha
second thing... so your saying that a femenized seed would have to genetically be predisposed to show hermie traits in order for it too? that regardless of stress caused to the plant it will not induce hermies?? that is fuckin awesome... seriously... thank you for that... i havent ever gotten a concrete answer like that.. and its the biggest factor in me never topping my plants at all.. im always afraid of wasting my time (ending up with males and hermies) so its kept me from many growing tech experiments... but knowing that the femenized seeds im getting wont turn hermie
(probably) unless they are genetically predetermined to is really a nice thought...
probably is the operative word here dude, researching strains is your best bet on finding a good strain that wont hermie, certain ones are more prone (blue moonshine for example, but then again this depends on the mother and father involved for that seed batch). now heres the interesting bit a plant that is intersexed i.e grows male bananas when crossed back to the same plant via a cutting from the mother will produce feminised seeds but will probably hermie late in flower. ive got this happening with one of my AK's now. im lookin on it as a good thing to have the pollen to cross later depends how you look at it i guess. your probably better off getting a reg seed and cloning to ensure no seeds in your circumstance.
and lastly.. the genetics thing...
first off bending our elbow doesnt change out hormone levels... so argueing its like us bending our elbow isnt a fair arguement.. it neither stresses us or changes our hormones... here is the basis of my idea... i will use alcoholism as an example of this... mother A is a heavy drinking alcoholic... has been for a few years... she has daughter B... almostly certainly daughter B will be predisposed to be a drinker.... mother A caused a genetic change in daughter B from a variable, this case alcohol, that was introduced before the pregnancy.... same thing with crack babies whos mother smoked crack... their genetics cause the babies to "need crack" due to the affects and changes on the mothers... their genetic changes causes physical symptoms after/at birth that have nothing to do with them, and are caused by a variable that changed the mother, who, in the beginning was healthy and not an alcoholic/crack head/ect.. now i know this is slightly crazy thinking... but its just my arguement as to why i was inquiring about it.. im not trying to prove my statement right... just explaining the logical reasonning behind asking... obviously plants dont follow the same traits as humans...
I was using the elbow point just to illustrate that the genetic blueprint isnt changed from mother to child/clone regardless of variables like bending. and im not trying to pick fault here but your argument with alcohol and crack doesnt quite work in that alcoholism and crack dependancy dont change genetic makeup, as crack babies when they reach say 6 months old have gone cold turkey and no longer rattle for the crack. alcoholics children dont need alcohol at birth the genetic blueprint doesnt change when they are born with brain disorderes its more a side effect/result. duuuuude i wrote all that then read the para below n realised i didnt need to baaaaaaaaahahahahah DOH...
but
what you say still make sense... even with the elbow arguement out of the way... and now that im not thinking stoner i found my flaw in my idea... in my scenario the mother is introducing a variable that causes physical, mental, and chemical changes with them... they become dependant on the variable to survive, with survive being used to cover everything from day to day living without side affects/withdraw symptoms to avoiding death from withdrawl on the other extreme... as you said bending the plant just messes with the hormones, and the plant eventually corrects itself... it doesnt become "dependant" on the bending or pinching as a means to survive... so as logical as my thought was while i was stoned... i think... it was only logical because i was stoned... it really doesnt make sense now... lol
shit happens... i would have done it too honestly...