How is she doing first time grower

"max" DLI, tightly controlled climate, well-constituted substrate, well-balanced diet... these are basically the things you can control and there will be great variability due to genetics above and beyond all of that, too. *max dli is a relative concept... depends on atmospheric co2 levels, termperature and RH%. It will vary from one garden to the next and invovles some trial and error. You are already engaged in that trial and error. continue to ensure proper growth pattern and you rlight is where it needs to be as far as what it provides. -- Too lanky? needs more. Too tight? needs less light. Unless the climate of your garden changes drastically, this will be consistent from grow to grow. when i grew year round, i noticed seasonal differences, because i only had a loosely controlled environment. Check out guides and articles on cocoforcannabis.com for the best info with the least amount of gimmicks and bullshit bro-science. Get the basics done well before uo start doing weird stuff. This way you'll recognize how useless most things are, lol.