I don't think you should be LST'ing this early, move your lights closer if possible. I wouldn't LST until You've got 3-4 true leaf nodes.
Autos can be lst'd, just not topped, and op you should def move the lights closer as close as possible without burning it, it's def stretching
^^^I agree;; i would try to hold out until it gets decent roots then transplant it and bury it deeper than it was. Then let it grow some with the closer lights and begin lst!
Yea i would def transplant in a couple days an inch deeper, and bring those lights down. So to answer your question Do not LST it. and Yes it is stretching