European School vs Local School: Recommendations for an expat family?

Hi fellow redditors.

I've already searched the sub for relevant threads; we are trying to decide on schools for our 4-year-old starting nursery.

We want our child to integrate here (although not certain we're staying forever, we intend to) but also find the school system a bit stressful. Perhaps you can help us:

- Local schools require Luxembourgish, German, French, English. So, 5 if you add the mother tongue. Won't our child struggle academically? Also, the child speaks its native tongue but needs to learn to read and write it. The European School has the relevant section for this, otherwise we need to run it in private.

- If a child isn't native in German/French, does it affect their chances on an academic track, even if they are smart? We aren't the parents whose child has to be a doctor, but we'd like them to have an equal opportunity to whatever is their talent.

- How does someone get into a technical/hands-on profession? How do universities view the Luxembourgish Première diploma vs the European Baccalaureate for competitive fields like dentistry or engineering? Which one opens more doors if you want to study in English vs French vs German? We only know how this works in our home country; no clue how someone becomes e.g. a technician or a hairdresser or a nuclear scientist in Luxembourg.

Any suggestions/personal experiences would be appreciated.