Lots of problems here...first up, don't consider putting the M32 in the Intellijel cab. The space in that is expensive, and the Moog already has a case. Save your Eurorack hp for things that 100% require it. Next, the tile row; that USB tile is "standard" and Intellijel uses a different spacing for their tiles, so that won't fit in there. Also, the other Line Out tile isn't necessary, since the stereo I/O tile works with the 7U case's 1/4" connections. See here: https://intellijel.com/shop/cases/104hp-84hp-7u-performance-case/ for reference. Also, with the stereo line inputs, the Ears is redundant...you could just make do with an envelope follower such as Plankton's ENVF to extract envelope CVs. That also saves 2 hp. Plus, check your module depths... Intellijel lists a maximum (over the power supply) of 53mm, but the real fact is that you'll need space (even with the Intellijel supply having loads of headers everywhere) for your power connections as well as airflow. Leave space in the case for these.
That ER-101 won't be any fun at all without the companion module, the ER-102 Sequencer Controller. The Plaits and Rings both have third-party builds that take up less space. In a small build like this, it's important to reduce size as best as possible. Also, leaving the M32 where it belongs will help with this. And don't go with replacement panels at the start of all of this; leave the Dual Looping Delay as-is to help avoid potential hassles that might arise from a panel swap.
Speaking of saving space...is the Supercell necessary? It's a very large module at 34 hp, and if you want the granularization of the Clouds, you should also look at a reduced-size version of that. For that, see Tall Dog's uClouds; they also do a uRings, but Codex Modulex does that and the Plaits in 8 hp each for less money.
Now, as for what's not there that should be...VCAs, LFOs, mixers are all pretty much absent here, and are all pretty necessary. Yet another reason why that M32 belongs where it should be...you will need that 60 hp for things that require it. This build also seems to have a case of the "Big Sexy Module" problem; if you build this as pictured, you're going to be fairly disappointed due to the fact that Big Sexy Modules require quite a few boring, utilitarian modules in order to get them to really shine at what they do. I also see very little in the way of envelope generators, save for the Stages, and EGs are important to make some of these (such as the Morgasmatron) do what they're capable of.
Don't look at a bunch of YT videos as your prime info source, btw...while some are good, a lot of them are rubbish as well, and there's no real rating system to cull out the ones where users don't know what they're doing. Simply because someone can post a video doesn't mean they're an expert (although I can think of a few examples where the posters might think they are). Instead of studying these, hit places online that allow you to study classic synths with classic architecture, synths that (in some cases) have been around for nearly 50 years that are still coveted devices make for much better templates than some random musings on YouTube. Instruments like the ARP 2600 (one of the best teaching synths, btw), EML 101 and 200, Buchla 100 series, the Minimoog, etc provide much better models to extrapolate on. Also, unless you have some galloping terminal illness, it's not a good idea to rush the process of learning what to do and then doing something immediately. TAKE TIME to examine options, study, create multiple iterations of builds, etc...otherwise, you'll wind up with something expensive and unsatisfactory. No one gets their first build on MG right. Not even people who've been doing this for decades.
Ultimately, my suggestion would be to delete this and then start again. But before doing so, take some time to look at what you're doing musically and then start building based on the strong points you see in your current gear as well as those you encounter while browsing through MG. You'll find that what you end up with after proceeding carefully will be quite different from what you have here, but at the same time it'll be several thousand dollars well-spent on an instrument that gives you many years of discovery and use.