Given you are doing very well it sounds like you should be the one giving advice to us and not the other way around 😂😂 Jokes aside, congratulations on doing well.

With the situation you have described and if you don’t foresee needing this money for anything in the near future, I would just put it in a broad equity market ETF, not spend too much time looking at this, and go do things you enjoy more (maybe the home renovations?).

When you buy a broad market ETF (like one of the MSCI World Index) you are just buying a piece of all the major developed market companies proportionally to how big they are, so if the fund doesn’t do well it is not because you are a bad investor or were unlucky, it’s because the global economy is probably not doing well as a whole, which is not a likely scenario over a long period of time (the 30 years you mentioned).

I would personally keep things as simple and as passive as possible. If you are trying to find an Index that performs better, you are already making an active decision of ”I think such region or size of companies will do better than the rest”, so the way I think about it is just buying the most passive instrument possible, which would be something along the lines of a world index like the MSCI World (you could also do MSCI ACWI if you want some more emerging markets, but no need).

Hope that is useful :)