look nice and healthy, been useing Plagron All mix myself as my base, nice soil, good amount of Perlite and not to strong for seedlings, I would recommend you to start on the nuts in a week or so , and start on 1/4 strength on your fist feeding and work your way up, about LSTing, think you need to bend it a bit more, but not to worry, you can do it a little at the time, use a string more at the top and bend it a bit more, I actually use two strings to make the bend more smoot, I also use a string in the other direction at the bottom of the steam, so I don't uproot it ..