Looks nice... LST isn't wrong as long as it resutls in an even canopy with multiple colas :)
As far as fertilzing, i assume that was the last part, i'd wait for a slight fade/slowdown, unless familiar with the plant. Your FFOF has lots of nutes. Your leaves look flush with them at moment. you see any hint of slow down, give them 1/2 instructed feed. See how it reacts. give a couple water irrigations... see how it reacts.. rinse and repeat and you'll learn quickly what that plant wants and how much you can push it without damaging it. start to see a darkness overtake leaves, and ease off again. find a happy medium of fertilization and irrigation of water only.