im new to the whole indoor cultivating thing and i am interested in buying a 400watt hps set up and need to know what else to order with it aside from the ballast bulb and reflector. does a lamp holder come with it or what? i plan on ordering from wormsway online and im looking into getting the lumatek digi and also either a homebox xs or a regular sized homebox. any info you guys could give me would be greatly appreciated.