Thanks for the perspective!
First of all, what kind of music do you want to make,
I want to mainly do self-patching atmospheric/pretend-acoustic stuff. I got heavily inspired by Lightbaths LOOM-videos.
how do you like to patch, are you starting out, learning the modular, or do you already have some experience?
I have a very basic understanding of most functions and how they correlate. By no means can i understand everything that is happening behind the panels, but i understand how sounds are made and how the modules work as building blocks. But plainly: no i haven’t really patched anything IRL yet, only smaller patches inside VCV rack to understand the functions, and i actually had a Folktek Mescaline for some month and patched the dupont-breadboard alot. But those where completely random in function, so i didn’t really learn anything from that experience that i can re-purpose for patching a real eurorack. Well, except that i enjoyed patching it, of course 
There’s no better or worse and no right nor wrong, it all depends.
It’s a big part of why i really enjoyed the thought of building a eurorack!
What do you use Peaks for that Stages can’t do?
Well, mainly i bought it before fully understanding stages functions. But i guess i mostly bought it for easily tweakable and basic drums, and the envelope functions.
Looking at your system I would not say you need a dedicated VCA for audio (though it can always be interesting/handy to have).
Plaits has a built-in vca, Rings does not necessarily need it plus you have a VCA on Ripples to fill some gaps.
Blinds might be more powerful to shape modulations, because it’s bipolar, and you can use it as a ring modulator. Veils is more interesting for audio, but also works great with CVs. Tough choice, it really depends on what you want to do.
Well, as i wrote earlier in this message, i’m going to focus on making evolving patches and things that can organically play out while i only modulate the later stages of the sound (VCF, Envelopes, Clouds, some LFO etc). So i think Marbles is going to be a big factor in how i want my setup to behave, but i know it isn’t enough to have the random factor of marbles dictate the whole piece.
What counts as audio in terms of modules? Is for example, Intellijel Plonk audio because of it’s samples? I will not use any external sources with this setup, not for a long time atleast! 