Hi,

The idea you have for nutes seems to be fine. I usually start a bit earlier than 5 weeks but that should vary depending on your preferences and the kind of soil you are growing in etc.

I had a look at the pictures of your seedlings and they could be drying out. That's happened to me many times because I try to put my cfls to close to them. It usually takes a while for them to get the strength to resit the heat from those lights. Keeping the lights further away, using humidity domes/misting with water helps to protect them. If I'm right, their growth might get stunted for a while, but generally they will survive and get strong again. I usually find that by the 3rd set of leaves they are strong enough to protect themselves against the heat.