Purple Kush & GDP? 2 part?

[SJSUGROW]

1-
I have just purchased my lights and necessary Supplies.
I plan on buying 6 Clones in the next few Days.
I would have liked to get 6 Grandaddy Purple clones, but in research i have found that they do not yield alot(0.5 oz-3 oz) and are tough for first time growers to tackle.

I would still like to try.
So i would maybe purchase 3 GDP and 3 purple Kush.
Can they live in Harmony together in a closet?
(5 by 6 *8ft High)

2-

They will be started from between 12" and 15"
Under 2 400w HPS, how long should i veg for?
and flower?
Fox Farm Nutes 3 pack, FF Soil
If i grow them at the same time, will one take longer than the other,
I want these buds to come out as dark as possible.
Theoretically...
if i have this setup by the 20th of January...
Will the harvest be dry and cured by 420???
thats 90 Days from the point they are 12"???

 

[cannalearna]

It varies to much from person to person, plant to plant to say. You have most of the control. Kush is normally short, so veg till 2-3 feet then flower. Flowering can take about 8-12 weeks.

You are cutting it close to 420. Check out this 12/12 thread.

Question about directly going to 12/12