I’m with @troux 110%, unfortunately. This will be unusable and not much fun super quick.
I just looked through the other videos of the first artist, and he appears to have a much larger selection of synth gear to choose from. He just put together a tiny rack for a singular purpose (what Lugia calls “mission specific builds”). In this instance, the mission was a single short composition in a garden.
Without even basic functionality, I would say this is an unwise investment. Good luck, though. Let us know what you decide to do.