I'll concur with the idea of buying a bigger case or be prepared to buy a second case if you're looking to expand.
The Dixie II is a good choice for your basic analog VCO. You've also included a digital one. That's fine as well. The Joranalogue is a good filter to get going with. Lots of outs and features to keep you busy creatively.
The Hermod can handle some LFO duties as well as some ADSR if I remember correctly. Dedicated LFOs and ADSRs (besides the stages) are nice to have. But there's some leeway on starter builds.
How do you intend on using the Chord module? Also, the Erbe Verb and the Nebula, I would purchase in a second round of buying. If you're going to keep a case of this size then you may want some wiggle room if you need to drop in a couple of more utilities or just-one-more module.
I don't see anything technically wrong with the rack. I'm glad you included some attenuverters. I'd think about the Intelljel 7U case if its in budget. They make a 1U Quadratt that could go in the 1U row. There's also an Intellijel compatible 1U Ornaments and Crimes that's pretty tasty... as well as buffered mults and a few other items.
Overall it seems that you put some thought into this rack and your time with VCV Rack shows.