Love the chain link scrog, I've always wanted to do that, but didn't want to blow 60 bucks. It's not too late to transplant, but as long as she is at least a 7 gal she can pump out a half pound. Build a stand for your screen, you are going to shit bricks when you are half way through flowering, and bump that screen and rip a top in half. I nearly did it a few times with my screen mounted in place. Working with that screen will be like working on egg shells.
As far as nutrients go, you seem to be doing just fine with what you use, but I've seen great scrogging results (in and out of hydro) with House & Garden, Flora Nova, TechnaFlora, and BioBizz. Technaflora gives by far the fastest and most lush growth, but the tissue is watery and the stems snap easier than I would like. Which is why I like the H&G, it gives you dense tough stems, but they don't get big and fat. I'm honestly starting to believe that Flora Nova is the way to go as far as a general across-the-board blanket nutrient. Good for everything and anything in any situation, first time I've been comfortable about saying that for any grow product.
How is the stretch on that plant in flower? My Blue Dream doesn't need any time to stretch at all, as soon as the screen is filled you can flip, even if she isn't more than an inch or two above the screen. Some of my plants, like if I tried my SFV, would need to get a lot of veg time because she only stretches maybe 1/3 her size, usually less. Be aware of how dense her flowers get so you don't over crowd portions of the screen. It sucks deciding which beautiful nug lives or dies when it's starting to get pretty in there. My brother made that mistake, and I get to help him choose what to cut, because he is too scared to do it himself, god dammit. He is doing an interesting scrog with a White Berry, which has a little stretch, and a Grape Krush, which has a lot of branching and stretching. I think he got a good medium going on his first try too, thanks to a lot of my help. Dammit, lol.