starting invest - opinion about etfs

Hello, I recently sold my apartment for a good profit, so I now have around €200,000 in cash that I'm planning to invest for the long term. My goal is to retire a few years earlier than expected and build enough wealth for both myself and my kids, so that by around 2045–2050 I can live at least partly from my investments. After doing some research, I've become quite interested in ETFs. My current plan is to make Amundi Prime All Country World (WEBN) (IE0003XJA0J9) my core holding, allocating aro