I never get why newbies do this to themselves.
Most of the hard-core AN fanatics don't use Connoisseur and "almost everything else they make". I've done it and yes the plants were f'in amazing and totally worth it imho but it's a LOT of stuff to keep track of. I like my growing more laid back so I don't go all-out like that. To each their own.
But seriously, "my head started spinning due to the fact that I'm new"? No kidding. You're using Connoisseur, which is touted as their base nutrients for expert growers. You're using a massive amount of additives when you're used to NONE of them. You're asking for trouble.
It's not the nutes, trust me. Build your experience and your feeding program together. Start simple.
If you decide not to give up on Advanced Nutrients go and get - at most - the Hobbyist level of the pH Perfect system and their Sensi two-part nutes (or the three part if you want to go that route). That's like 4 bottles plus the base nutes, simple as hell, and if you're running RO water you're guaranteed to have the right pH. That's simple.
Don't just jump straight to the highest difficulty level and if you do, don't get surprised if it's really hard.