I agree. Some serious study in VCV rack would go a long way.
But if the OP is dead-set on getting into Eurorack ASAP... I would recommend a preconfigured system if you have money burning a hole in your pocket.
Several manufacturers like Roland, Pittsburgh Modular, Make Noise, Erica Synths, Doepfer, etc. provide this.
Dealers like Perfect Circuit also offer their own in-house pre-configured systems. The median price is around $2000US. This isn't a bad entry point if you really just want to start wiggling knobs and learn-as-you-go.
Another and much cheaper alternative would be a semi-modular synth (as inexpensive as $300)... and a small skiff for external modules to be populated after you have a handle on the semi-modular.
Each solution has strengths and weaknesses and I'm not advocating any of them as being the best way to go. But they are better than your current plans.