there is some serious stretching going on here lower ya lights and get a fan blowing on the plant ,this will strenthen the stem and help imitate natural conditions
as for nutes your perfectly ok to use nutes in the veg stage just not for atleast the first 3 weeks of the plants life
if you want to you can use superthrive all the way thru the grow right up till the end
this will help the plant too thru the 3 week period that your not giving nutes
cheers all