DWC (newbie) growing height for northern soul?

Hi all, i am currently in the process of growing northern soul using DWC and my plant is currently in the 2nd week of flower and is 4ft and growing, it is now only 4in from my light (limited space) can someone give me some info as to how tall it will grow?

Hi there,i have just started growing my soul now,how long did you vegetate grow for,its states that you should let your plant grow to 8 and half inches high then change your light cylcle,if you leave it longer than this then you run the risk of the plants growing to high,im a cupboard grower too and had to move my light right to the top of my cupboard same prob as you,room,check when you change your light cycle next time,

well as a relative newbie i wasnt sure when to change so left it till it was about 12in, not good by the sound of it lol, i have just modified the cupboard and have added another 21in to the grow room (in other words i took the shelf above the cupboard out) will add a pic shortly.