as far as the light is concerned I'd just give them as much as possible without making them too warm if your temps are under 80 at the top of the plant I'd say you are fine I'd definately make sure you start with the light a bit farther away atleast at first and make sure the plants don't get cooked...

A lot depends how big they are I'm sure once enough leaves are sprouted they can take tons more light do ya know general height/width of them?