To scrog or not to scrog.

if my grow space is 4x4 with 7 ft ceilings, sloping down to 4 ft, soil grow with 600w HPS

growing white widow, blue widow, and blue hash

(growing 3 plants total)

should I scrog?

or not?

is it hard? would I gain more? or is it gonna be a waste?

thanks!

Johnny