If they are plants that like full sun and they have been hardened off to be used to it, then yes, great. And yes, full sun is way better than lights and should stop the legginess. Outdoors on a cloudy day is way better than 2" below the lights.
When to give your plants away depends on whether the people you are giving them to are experienced gardeners who are willing to fuss and care for them a bit. Having the first true leaves is still tiny/tender seedlings. I wouldn't give them to just anyone. Since I sell mine, not give them away (for a whole buck!), I usually get them to around 6" tall (depending a little bit on what kind of plant), nice sturdy little plants, not seedlings. And of course hardened off already, so people can just stick them in the ground.