Before buying any physical gear, you may want to explore creating percussion, bass lines, leads, etc. in another format. VCV is a free modular synthesizer simulator. I would recommend exploring that and creating the sounds you're after. VCV is no replacement for the real deal. However, it's a great way to learn.
Once you understand how to make something, you'll do better with evaluating if the Mother 32 and DFAM are right for you. The sounds, the workflow, the features may or may not be what you're looking for in YOUR own music. Eurorack is very expensive in terms of TIME. It takes longer to get the results you're looking for and those results only exist for as long as you keep the patch. If you're willing to accept the candle-in-the-wind limitations of modular and the slow work-pace, you're on the right track. But you have to be the judge of that.