first decent sized set up. 16 plants

Ezhydrokit.com 16 super pack with (600w hps)...does anyone out there think i need a 1000w hps? i could def. provide the right ventilation and cooling so would the 1000w be more efficient and produce higher yields. i am certain on growing TGA Sputnik 1.0 and i might also do a g13 hybrid and a large yield sativa. with these details could anyone provide me an estimated dry yield?
i was also wondering if anyone recommends a different hydro set up or a different selection of seeds. thanks ~highDROdiesel

Have you ever grown before?

nft... I havent read anything about that before... but Ive heard of it.

If you had any problems I hope you know some other sites that have nft help, lol.

600w provides a better lumen per watt ratio. Can you use 2 600w instead of 1 1000w?

or two 4'-8 tube t-5's?? VV