Hi,
I'd wait till you see a few more nodes and a bit more growth so you have something to LST. You can 'top' for increased yield if this is something you want.
A few others you can do is;
FIM
Supercrop
But i'd wait till you get a bit more growth, also when flipping to flower when you decide too, you can defoliate the big fan leaves blocking the bud sites. But don't go overboard, after the 3rd week in flower the stretch and new growth of fan leaves being produced stops. If you're struggling have a look at my diaries and see the effects LST, TOPPING has as there is before and after pictures. Any questions, message me and i'll help you along. Hope this helps. Nice looking plant so far too. Goodluck