super silver haze

I am starting to grow super silver haze for the first time in a 8x4x7 tent. I will be using two 1000 watt ballasts with bulbs. My question to anyone on this board is to find out how tall my super silver haze will grow in the flowering stage. I do not want it to go over 5 feet tall to keep it about a foot and a half away from the light sources. my hoods will be air cooled to reduce the temperature in the tents. My technique for maximum yield will include fimming as this may result in a shorter plant. So please anyone with SSH expertise inform me how tall to allow it during vegetative stage and what height I should expect till the end of flowering.. I will b looking to FIM about 2-3 times. thank you​