Greenpassion, did you soak your seeds first, or use paper towels? I always sprout mine before I put them in the pots, makes them come up lots sooner. Your ought to be fine anyways, even if you didn't sprout them.Maybe a few days longer, before they come up though.
I always use cfls, close to the soil, about 2inches away, but you don't even need lights, until you see them pop up. The cfl, keeps the soil warm.
Never used an Led for that purpose, but it should be fine, just make sure it's far enough away, so that it want burn your plants, when they do pop up, like I said, you don't need lights anyhow, until they break the surface of your soil.
If your gonna use a light I'd use cfls, for that.
GoodLuck with them