Topping, FIM, Lolipopping or All Natural? What's your opinion for a Sativa-Dominant

Info
Strains: 2x Blue Dream Haze 1x Strawberry Haze
Light: 600w MH for veg
Nutes: Botanicare PureBlend Pro
Co2: eZ Co2 Bag
Room: 4x4.5 x 7
Medium: Soil
PH: 5.8 (w/o nutes)
175 CFM exhaust fan with passive intake hole in bottom of room
Temp: 26 degrees Celsius w/ 45% Humidity
http://imgur.com/a/xK9g8
As you can see in the pictures I am growing two Blue Dream Haze's and one Strawberry Haze from seeds. my room is only a 4x4.5 x 7 under a 600w MH/HPS.
Which technique do you recommend for these plants to get the best yield to quality ratio. I don't want to scrog for my first grow. I am considering Uncle Ben's FIM technique to get 4 Colas, i'm considering topping for 2 colas, or even letting it be for one.


Lollipoping also has caught my attention because I feel in my room with only one light placed above most of the light will be taken from the top of the plants.
What techniques do you recommend for Sativa dominant plants such as these? What is best? 1 Cola, 2 colas, or 4 colas? What gives most yield? What gives the best quality (generally)?


I'm open to any and all suggestions, recommendations, etc. I'm just trying to learn to help my first grow be all that it can be.


And i'm aware my plants in the pictures are slightly bent that seems to be from replanting them too high in their new pots, im hoping they straighten themselves out. And does anyone know why my other Blue Dream (#2) seems to be so far behind compared to my other one? They are the same age.


Thanks everyone, appreciate any input and pictures you can provide.


Uncle Ben's FIM: https://www.rollitup.org/advanced-marijuana-cultivation/151706-uncle-bens-topping-technique-get.html

What method you use is completely your own preference, depending on how big you space is etc. Get that ph up though, 6.5-6.8

Use whatever technique you have to to maintain an even canopy with good air circulation and light penetration.

it is also strain dependent. while most don't mind lst there is stains that don't take well to topping/fimming. so research your strain.

not sure but some of it makes sense to me, other stuff is utter bullshit (like the logic removing perfectly good fan leafs increases yield) ... if the leaf is shaded, or impeading air flow or whatever; so be it..if the leaf is still sucking in photons, then removing it is fuckin stupid.....
HTH

edited to add; oh and whatever you do, don't totally disregard the assorted topping, LKST or whatever height control measures there are... I did and my sativas stretched so far from the light that it totally fck'd up my yield...

my take: some of the idiodic crap on youtube about removing fan leafs is dumb...whereas UB's topping techniques, lst and suppercropping is spot on (we supper cropped a Blue OG, frigging plant is the shizit)