I'm building my first PC and seeing as I've bought a h150i Elite LCD I figured I would get onboard with the iCUE train, but I have a few questions.

Hi, so as I said, already bought a Corsair AIO, and I'm also leaning towards getting the 5000D Airflow case, and hopefully furnishing it with a mix of the three ML120 Elite fans that come with the watercooler as well as six QL120 fans and a single LL120.

The idea would be to have three QL120s at the front and three on the side mount, then mount the watercooler on the top of the case along with the three ML120 Elites as push fans, and finish with the single LL120 at the back as outflow. Basically that way everything looks good from the internal perspective as the QLs are double sided, the LL is showing it's good side and the MLs are facing down so you can't exactly see them. However I've tried understanding how all these different bits connect to this node and that core and this bit of the motherboard to that socket on the PSU and honestly it all seems very 'arm bone connected to the red thing, red thing connected to my wristwatch'. I read a comment about another person saying how it's deliberately overcomplicated and from my perspective dealing with this stuff for the first time... yes, very.

Anyway, my questions are:

1: I've seen someone say that connecting different fans to the same node/core/thing/I have no idea is a bad idea, would that be a problem with having the three ML120 Elites as well as the single LL120 connected to the same doodad?

2: The motherboard I've got is an MSI MPG B550 Gaming Edge WiFi which has 2 USB 2.0 sockets on the board, and my PSU is an SF750. I know I can get a SATA splitter for the power, but will I be able to have what is going to be 10 fans in this Corsair setup with only two USB 2.0 sockets on the board? It's actually a bit annoying that the eight PWM sockets on the board are going to go seemingly unused, but iCUE just looks too user friendly to not go to the trouble.

3: This is less of a question and more of a plea. If any of you wise wizards can help by basically spelling out a map of how to set this up, as in exactly what components (Commander Pro/Core/Lighting Node etc) I need to buy to make this system work/what will connect to what/suggest the best way to set this up with regards to other fans I might need to avoid potential compatibility issues or which bundles of stuff get me what I need together the easiest, then I will straight up just give you platinum because I've spent the last three weeks learning about all the other parts of how a PC works beyond it just being a magical box of lights and sounds, as well as hours reading reviews, watching build videos and searching for items on offer that at this point I'm basically done, the case and fans are the last things I need and my brain is fried and I wish I was dead.

So yeah, any help is appreciated, any advice welcome. If you've made it this far, then know that you are a man of focus, commitment, and sheer will.