Howdy, and welcome to the Farm!
First of all, Emerald Harvest makes very good (if not better than Advanced Nutrients) fertilizers, but personally I would ditch their 3 part line and go for their 2 part "Cali-Pro" line. It's much better, in my opinion.
Also a couple of products they make I like to keep in my toolbox - Sturdy Stalk and pH Down. Both very potent, a little goes a long way and lasts a long time. Same for the Cali Pro 2 part series. I usually only have to go half strength sometimes less, from what they recommend on their charts.
The golden rule of cannabis growing is never follow the manufacturer's recommended dosages especially if they're making fertilizer for cannabis. They ALWAYS tell you to use way more than what you really need, because they want you to buy another bottle!
Generally speaking most fertilizers you want to go at least half strength and work your way up or down as needed. Eventually you'll get to know whatever product line you choose to go with, and you'll be able to tell what your plant needs and when.