Justin 121: In an A/G you can have the light a couple of inches off the tops of your plants without a problem. Brown spots I would be concerned about because that's not usually an indication of too much light but possible nute burn especially if it's on the curled leaf margins. I've seen some come out with slight spotting in the first set of leaves and the successive leave were fine so I wouldn't panic yet, especially if you're doing everything according to what A/G says.