I have read that if you are planning to use your buds to make shatter or similar products, then now would be the time to harvest, to take advantage of the plants highest possible thc potency. But for the best quality of smokeable buds you should wait for more amber trichomes.
Source: The Bible
Would highly recommend checking out this book: https://www.amazon.com/Cannabis-Growers-Handbook-Marijuana-Cultivation/dp/1936807548
There isn't an AC Infinity best set up, because it depends on the room the tent is in. You'll have to read the AC Infinity manual that came with your box, I'd also recommend reading the tutorial that came with the box as well.
The person who wrote the tutorial that comes with the AC Infinity unit has a youtube channel, I'd watch at least this video and this playlist:
https://www.youtube.com/watch?v=5Gf3Cnfj6Hc&list=PLfV3Lv-yo9iiqPqnq9kDXgrAyTOVjnHkD
https://www.youtube.com/watch?v=eUKfEpVIudY
No one is going to be able to walk you through every step. It's time to get your hands dirty! It'll be fun. Don't worry so much about making the first grow perfect.
Biggest advice is make sure you have all of the things you'll need for the grow before you start. You don't want to start growing and then realize you need an ac unit or heater or humidifier / dehumidifier, or whatever else you may need.
HIGHly recommend that book though. It taught me way more than reddit has. Not that this isn't a good resource, but the problem is half of your answers are coming from people who are new and also have no information, and you end up getting passed a lot of bad information. Once you know a bit more, it becomes easier to tell who knows what they're talking about.
I tried to find the link to the standalone research paper with no joy. It's an excerpt from Cannabis Grower's Handbook: The Complete Guide to Marijuana and Hemp Cultivation, published last year. https://www.amazon.com/dp/1936807548/ref=cm_sw_r_awdo_PCK3B1XG49N4QQ1MA5KG
I did find this paper, which I am reading as we speak
Impact of Harvest Time and Pruning Technique on Total CBD Concentration and Yield of Medicinal Cannabis: https://www.mdpi.com/1437218
Buy this book, all of your questions will be answered.
This book it’ll cover you from home grow operations to farms.
Ed says: "Have you tried Amazon?"