If you did the numbers 1 and 2, then you are well prepared if ever an inflation will hit and the number 4 will now be easier for you. For the number 3. Isn't that very risky? I don't know why but the first thing that came to my mind when you say high yield are those scams in defi but there might still be legit companies which can offer a nice apy or return of investment.

Investing in crypto seem to be a better thing to do before those. Cryptos are also known to be a hedge to the inflation. I only don't know if what the op was saying is legit and can help combat the inflation but he only mentioned U.S there. What about other countries?