Looking for information on a few things indoors

[Krelaa]

Hey, what i'm doing here is collecting information on a few things as i am researching as much as i can before I can do what i need to. Answers that you give might spark more questions and i have time to wait and learn as long as the information is fact and comes from source or experience as i understand that it is a science and learning more can only help.
With that being said my starting question is:
how big of a grow space should i make a Veg and Flower room? (Veg Room= 1, 1000w mh/Flower=1000w Dual arc hps/mh)

 

[Krelaa]

spec's as far as I myself have come up with, base on research.
SOIL GROW

Strain - Gorilla Glue #4
# of Plants - 19 (1 mother, 2 in clone bucket,6 in veg, and 10 in budding)
Grow Type - Soil
Grow Stage - Vegetative/Flowering
Bucket Size - 3 Gallon
Lights - (1) 1000 Watt mH for Vegging/ (1) 1000 Watt mH/Hps dual arc for Flowering
Nutrients - Advanced Nutrients Grand Master bundle (all 15)
Medium - Pro-Mix BX
PPM - Options
PH - 6.0-7.0
RH - 50% to 55%
Room Temperature - 70 to 80
Room Square Footage - Options
Pests - None Known