thanks for your reply Gbuddy how many plants u reckon for the sog method and in what size pots
I would go for a square foot per plant using the sog method.
if you go 12-12 from seed or clone without veg even less. In your case I recommend a short veg time because you have enough space so no need to go 12-12 from seed or clone.
Depends also on how you want your plants to look like.... bushy (needs more than a sq ft per plant) or only mainstem and a fat headbud without lots of branching (sog).
If you go for sog try to use square pots. That way you can use the most of your lower growspace for roots. More roots more buds.
And always try to airate the tent well.
Hope this helps
Peace and love
Edit
if you dont have enough seeds for the sog I would wait until you selected a clone mother. In this case I recommend to grow 5-6 more bushy style plants for the selection run.
bushy plants grow best in bigger containers 5-10gal should be ok but bigger is better.
Bushy plants will also yield some popcorn along with the top buds because the lower parts of the lower branches do not recieve much light.