+1 on this is unworkable and probably horrible to play - due to ergonomics - unless you have tiny fingers!
start with a blank sheet - decide what modules you want (and which modules you need to get them to work properly - hint - if modulation sources and utilities take up less than 50% of the rack then you need more of them - and for generative music maybe even more) and then find the right case - which may be slightly more expensive in the short term, but will save you money in the long term - remember it's a journey not a race!
as people have already said almost all these instagram/youtube influencers with tiny cases are taking modules from their actual rack to demo specific things - and the resulting racks are almost always one/two trick ponies
output modules are another point of contention - you almost definitely don't need one - unless you need balanced outs - if you need it for headphones there are smaller modules that will do the job - alm hpo
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities