QUICK EASY QUESTION----> Space/# of Plants= ?VEG TIME?

heya rippin 600w hps cooled in a slightly less than 4x4 growspace, w 4 UFO fems:

rocklock
lemon skunk
super critical haze
white siberian

theyre only 4 days old, but im boggled as to how many weeks, roughly, 4 plants should be vegged to make the best use of the space/light available???

ive researched scrog methods and just dont like the way it sounds, labor intensive, stress intensive, i just wanna let em do their thing and be as happy as they can every single day of their lives>>>

any input is appreciated

I would veg em for 4 to 6 weeks or up to 2 ft tall which ever happened first

exactly what riddleme said depending on how they grow if you flip them at 2ft you don't want any more than 5 in there or maybe 4 i got 2x600w hps on the go at the mo and i have 5 under 1 and 4 under the other

thanks guys... + rep