If you use the paper towel method, you should only have to wet the soil (until you've got some runoff) before you plant, and dribble some water over the freshly sown seed. They should emerge before they need watering.
With good seeds, and a TINY bit of exposed taproot, it should sprout 48 hours or so later. Well before it should need water. I heat the soil with my light. (400w hid. Idk if cfls or led get hot enough to heat soil, but I would imagine so of they were close.)
I like to plant a bit deep. Whitebb2727 (hey buddy!) Actually gave me the advice to put them a half inch down, and my last 5 sprouted %100 with nice stems and they look pretty.
Ps: lots of videos on YouTube show super long taproots, but as soon as a tiny bit of root pops, it's time to go into the soil. I check after the first 24 hours (at least to aerate the container) and if they pop, I drop everything and plant. Paper towels are good to see if a seed is viable, but they shouldn't stay in there any longer than they have to.