Looks like a super fun set up.
Clouds successor is supposed to be 14hp.
My main comment would be that you’ll need more modulation sources.
What do you think you’ll use veils for?
After a few years with both Veils and Blinds, I find Blinds much more versatile. It is easy to use as a straightforward linear vca once you get used to finding the quiet point in the middle position of the big knob. For cv mixing I find it far more useful.
Plaits and Rings (sort of) have built in vca’s.
Streams is is 12hp. You get two less channels, no mixing… but you do get built in envelopes and basic filter, plus loads of other goodies! It was one of the last modules I got and I had to ditch Veils for it but I’m very glad I did. Depends where your needs are most.
Do you think you’ll use the advanced features of Tides? The oscillator mode is in Plaits but with only one out (or two flavours of one out).
Second hand versions of Peaks are available.
Kinks is a very useful plumbing utility.
Mimeophon is worth looking at if you decide the Magneto is too big. When in hold mode there is some overlap with the Morphagene.
Plaits and Rings (sort of) have built in vca’s. If you just can’t fit everything in the case I have found the 0-Coast to be a great companion. Sometimes I use it as a voice but mostly I set it up for modulation. It is quite deep what you can do with it and pairs well with MI stuff.
If you need there are some good passive Modules available which you can mount outside the rack: attenuators, vactrol vca’s, OR logic Which can also mix modulation.
0 coast is another one which can live outside the rack. Lots of options within.