Looking good, but I hope for more sun for your ladies.
I think it's a bit early to start flower nutes, if I read right, it's best to wait for end of vertical growth, which in your case will probably be at end of month or even later, in july.
Go thru stitch's thread about growing superautos, a very useful thread.
"..strat flowering program at week 6 /7 just mix both nutrients program for one week or two and stop flowering program at week 11 for Number One and Chaze and at week 12 for Annapurna and Nirvana sky..."
I guess this refers for indoor growing, for outdoors add some couple weeks to the count.
But I can't say this, cuz it's my first superauto run and don't want to mess it, lol. Let's wait for stitch's advice, I'm really interested too!