Download VCV Rack. It's free. It's basically a Eurorack simulator. Many of the Mutable Instruments modules are available in it. The more you play the more you'll learn about making Eurorack patches and what gear you need and what gear you gravitate towards.
You will also find that many Mutable Instrument designs are available via third-party as micro-versions. This will save you a ton of space in your rack. You almost ALWAYS want the ability to add future modules to your set-up.
The other thing is that at least one of your modules is outdated. The Z-DSP unit has been revised. Mutable doesn't make Clouds anymore. You can find modules second-hand. But you're taking a chance on used modules.