1000 watt, just right coco soil, 7 varieties

I have a new set up and am real excited to growing my own stash again. Here is the run down.

Room size 8w x 10L x 8tall with cinder block on 3 walls, 1 drywall wall, air tight ceiling
1000 watt Hps
5 gallon buckets with just right coco xtra soil and bottoms lined with larger rock 4 drainage
Transplanted last Wed 3/2 at about 3 weeks from seed
Just added Mylar walls built with pvc pipe
ph-6.5
temps 64 night 82 day
No nutes yet, soil states not to ferilize for a week or so.
Varieties- 2 pinapple express, power skunk, big bank, mekong high, special, blueberry, orange bud -alot of attitude freebees

1st pic 3/2
2nd pic 3/8

Couple questions for you guys
I have to flip them next wed 3/16 because going on vacation 9 weeks from then.
Should I just let them go or train them somehow for best production?
Do you think all these varieties will be ready by then everything says 8-9 weeks?

Well here is my week four update, one week since transplant. Added a humidifier to the room because my humidity was in low 20's seems to be helping. Pretty happy with the growth so far, not like some of u studs out there. Still no nutes will give them a little next feeding. Does anyone have any real numbers in days for any of these varieties, can only find approximates in weeks. Dutch Passion mekong high, orange bud, and blue berry. G13 Pinapple express. Kannabia power skunk, special, and big band.
Still taking suggestions on training or prunning.