yea that will need to be at least 2 feet away or so. depending on your ventelation, air temps and such. you should have a fan on your plant/plants at all times.
its entirely possable to get alot off one plant with that light! it would be great! you would have to lst it, so it would be more like a bush with a bunch of tops coming off, you would need a really big pot, like a 7 gallon or so. veg it out for at least 2 months, longer if you have the room. or you could just do 5 or so plants smaller under the one light.