Too much heat for seedling?

I recently found two seeds in some killer weed. I have planted them in pots and one has sprouted so far. I plan to use a combination of natural sunlight and a gro glow floresent to suplement at night. My question is if I should wait to start putting the seedling outside in the direct sunlight or keep it on windowsills until it gets some leaves and matures a bit? I live in SW FL so it is currently hot and humid outside. Also, will the temp difference affect the seedling negativly? What would you suggest.

Thanks!

I used to live down there. It's hard to start seeds during this time because the days are long and hot, but not for long. I'd say just start them outside if you intend to finish them out there. But make sure you give them plenty of attention and don't expect much.
-m420