personally i would go with lowryder if ya want a small discreet grow they do grow up to a foot (12 inches) but have been known to grow up to a foot and a half and 2 foot maximum they are a good strain they auto flower under 24 hours of light and will be ready in 2 months from seeed to bud which is good i have just germinated a lowryder and have just potted it and cant wait till its time to snip off that big bud lol
hope this helps cheers