Hi justakiwi. Some good comments on here and I mostly agree with what Peat said in post #8 (wouldn't consider feel good "socially responsible" investment funds in your situation though) and stick to dribbling into the USF through passively managed Sharesies.
The USF includes the 500 largest companies on the NYSE and many of those rely on sales from around the globe and thereby give you access to foreign exchange hedging in dozens of currencies and access to dozens of economies.

I can't see why you would want to diversify any more than that with your relatively small amounts.

But good luck whatever you do and I repeat what 777 said above, you most certainly have not made a fool of yourself with your questions and obvious enthusiasm.