I'm taking a trip to vertland,anyone wanna help me find my way?

so I'm am 2 weeks and a day from my first indoor harvest...

I am growing in a airstream trailer...i have 4' 9" of vertical space.....this grow wasn't so great
2 plants grew way bigger than the other 4...and it's going to hurt the outcome...

so yeah,i am about going to go vert my next run... how far away should the plants be from a 600w hps?

I am going to make a ring using 2"x4" wire fencing for around the bulb...

going to be running a cap ebb and gro ...but i'm not sure to do 6 or 8 plants...

also i was going to take some of that 2"x4" fence and cut some so it will fit in the ebb and grow buckets

in a half circle coming out the buckets to use as a scrog..(i like this idea as i can still move the plants about,just taking the inter bucket with the screen) ....but then the screen would come into contact with my nute water....would that be a problem? I'm using dyna-gro...


so to recap

How far away from a 600w?
6 or 8 plants?
Can the screen come in contact with nute water?

.....also,i love the love

http://ukcultivator.net/showthread.php?1284-HPS-and-MH-LAMP-DISTANCE-(hanging)-CHARTS.

i got one more ...you guys think this fan would be fine? http://www.amazon.com/gp/product/B001R1Q2C6/ref=oh_o00_s00_i00_detailshttp://www.amazon.com/gp/product/B001R1Q2C6/ref=oh_o00_s00_i00_details

also thanks queues