18 on 6 off for 1-2 months or 12-18inches...whichever you prefer.

250w hps light distance from canopy... 1-1/2 to 2 feet to start. Once acclimated. You can lower them as low as your fan placement and attention to them on a daily basis will allow.

well you think on it. you should go read the growfaqs and some of the bigger threads, even old threads and find grows that are similar to what you will be limited to...that way you can prepare for problems before they show up in your grow. Make a plan.

lw