Light needs :?:
 

My family room used to be a solarium and has three walls of windows (east/south/west) plus skylights. Now, this time of year it's cloudy a lot here in SW Ohio, but it's still a very bright room. Can I assume my seelings will get enough light in here? I really would prefer not to have to put together a light setup if it's not necessary.

I don't think it will be nearly enough light. You could try, but chances are they will become leggy.