please advise me on my second grow

I'm starting my second grow very soon and want to get everything right n be prepared here Is what I've come up with.

• coco soil
• coco a + b
• pk13 14 bloom
• big bud
• two X 400 watt HPS
• 5 X white skunk
• 5 X purple haze

Seeds are sensi seed does this sound ok to any one ? Any one point me in the direction of good smoke and fat buds pleassse all help will come in usefully I'm a newbie !! Peace tried other secrions of forum got no replys : /

Good ventilation setup, pH and PPM testers are going to be immediate needs.

-spek

Thanks what's is a ppm meter and yh I'm planing just inline intake. Fan and coupke of little clip on fans ?