Only danger with the light would be heat and if its not over 86ish degrees at the seedlings they are fine from that anyway.

As they go into veg they grow just fine even a tad warmer than that. I was on about 90-91 for a while with my WWs and the were still growing mad.
Same with nutes, they can take more than you think but ofc you have to be careful when they are so small.

More White Widow for the people!

Good luck with your project

Puffzter