Scrap it.
You have a collection of modules but nothing you can really use to produce anything meaningful. VCA? Filter? Modulation?
The vast majority of modules are not self-contained synths. Buying a module doesn't give you "that sound" unless its in conjunction with other modules.
Find VCV Rack and download it. It's free. Once you've managed to create some ambient music on VCV Rack, then I would consider buying modules and putting together a system. But I doubt you're going to get anything useful in that space to produce anything like what you're hearing in the videos. In the space provided, you could probably make a simple one or two oscillator set-up with a filter, LFO, and a few VCAs. But for what you'll spend, you'd be better off getting an all-in-on synth like a Deepmind 12D for $600US. You'll have to throw a few thousand to duplicate the racks in the video.
It's a lot harder to get something useful out of a limited amount of modules on a limited budget in a limited amount of space. So you're really fighting an uphill battle to get what you want under these conditions without any experience assembling a case.
I'm not trying to discourage you or be mean. Quite the opposite. I would put together a $2000-$3000 budget for starter case or buy a preconfigured case+modules.