Flipping, Wholesaling, Owning Rentals, Crypto, Stocks, etc.

You are still overthinking it a little: no need to incorporate inflation, because it is just a devaluation of the currency, so it effects income and expenses alike.The fact that you are planning for capex items already puts you ahead of at least 50% of new investors, who just think about PM and repairs.One major realization is that you need equity growth to pay for capex.

It sounds as just like you got pulled in with a mastermind class for $10k, you see shiny objects like crypto or stocks going up and think your approach/investment is bad. 

Stamps are almost like currency.  

My current investment portfolio is solely in stocks, options, and crypto.

If you want to break the USD, which dethrones USD as world reserve currency, which dethrones US as predominant world power.....

This monetary policy is intended to lower interest rates. essentiallywhen you print currency your devaluing it causing prices to increase (more dollars chasing fewer goods)also lowering interest rates has a stimulative effect to increase pricing because people borrow moreAnd it will make consumer goods and asset prices more expensiveThe people that survive and thrive during inflation are the ones that are buying assets and I believe low down payment loan programs are great for buyers just getting started and for buyers who already own property.

Literally everyone is a RE coach or some type of finance expert (typically buying stocks/index funds some crypto) and they talk on and on about "contact me about how to be successful and free from your W2 job.

Do any of these banks allow investing in currencies?

I have to try something that would allow me to make money online because my currency is $7 to $1 US and the key a lot of the time is speed.