ok so ima by 1 of these are they good for budding? High Tech Garden Supply

edit:
now for the ballast: i need a ballast for either a 1000w or 2 500w hps bulbs so how would i do this? just get 2 500w hps ballasts and then do that? or would 1 1000w ballast be better and cheaper in the long run considering the price of a 500w bulb and a 1000w bulb?