I'll toss my two cents in. As I've read in a number of forums, "start seeds/clones in a small container/seed starter peat pellet." I've been running clones now for about a year since I started growing again. Haven't started a seed in awhile, but I've seen many many situations over the couple decades I've been dabbling. My suggestion, sprout them in a paper towel. Google it. There is process of keeping moist, warm, etc. Boom. Germination will occur. Place your sprouts into a solo cup size container. Seedling friendly medium no hot soils. Ample space for the next few weeks of development. Once their roots have filled that container I say toss em in larger container. As far as the light on the seedlings. If it doesn't have a dimmer I'm thinking a little intense. Maybe at the height your suggesting, but my experience I've always kept young seedlings/clones under a small t8 or t5. Waste of electricity to run big LED for seedlings. Somebody may have better suggestion/experience with this specific situation. If that's all you have then maybe use something to diffuse the light a little. Hope that sheds some light on the subject for you. Pun intended.