Should I back the LEC light off a bit?

These are White Widow autoflowers that are 2 weeks old, 24" under a Sun System 315W LEC.
Temps are good (not hot) but I'm noticing a little upward leaf curl. I have two fans in there blowing with one an oscillating fan blowing just over the tops. Humidity averages about 55 rh.
Could my light be too close for this stage of their lives?

Overall I'm liking how they are growing.
They've received only rainwater and one feeding of diluted tea. They are in a 50/50 mix of Ocean Forest and Happy Frog with added coarse perlite. The 2 on the left were slow to sprout.

Place your hand at canopy level and hold it there for ~ 20 seconds. If your hand is uncomfortable, your plants are as well. That is a 3x3 correct? I'd keep your light at 18-24 inches away, no more than 24 inches. Light intensity roughly doubles for every six inches closer your light is to the canopy of your garden. The further away your light is, the more your plants will stretch, and the weaker growth will be (foliage/stems/roots). Leaf curling looks minor, I'd just let them be but watch carefully.

What is your current canopy temperature?

Canopy temp average 77F.
My hand is comfortable under the light at 18-24".
Thanks for the help.