It's impossible to be a purist! at one stage I was trying to avoid cacti and look at me now! I have learned to stick to plants that can manage in my conditions so I mostly don't grow Echeveria any more.
Your final plant is Cotyledon orbiculata cv Oophylla, it's a favourite of mine. Cotyledon pendens needs a lot of light to get red stripes, that's how it should be. In nature, they live on cliffs in harsh sunlight
You just need to graft a bunch of cacti and you'll be like a Mexican haha, echeveria seems easy to me to take care of but I think everyone at some point has a nemesis.
I had a feeling about doing a cliff type pot.
Cotyledon orbiculata cv Oophylla, got it. Thank you.
I'll stay away from grafting before I become crazy: I'm ok with spending 5 years watching something grow 😁
Echeveria dislike the weather at my place: the greenhouse is too hot, the sun is too sharp outside and some years it rained too much