However  i concerned whether the same rules and strategies can be applied to real estates in indonesia since they have the different law and currency. 

Lack of reporting re: virtual currency is on the rise as well.For rental properties, honestly if you are audited for this, then the tax preparer usually screwed up royally.

But I can't help but think about the currency inflation the Federal Reserve and government have been pushing the past few decades. 

But I can't help but think about the currency inflation the Federal Reserve and government have been pushing the past few decades.

When I study the hyperinflation of the Wiemar Republic after World War I (When Money Dies by Adam Fergusson), that hyperinflation was brought under control by backing the German currency with mortgages because the German public had confidence in them.Study Warren Buffett's presentations (Warren Buffett MBA Talk, a 90-minute slice of heaven if you're a value investor).

We're looking to build long term wealth and passive income.We have US bank accts and are actually paid in US$, so it's not like we're actually a foreign borrower with currency risks. 

Based on the 70% rule do they pay more then 70% and if so what is the number for Houston markets, for Ex Phoenix Arizona is very high at 80%-82% because it hard to find deals there.

If you want it sooner, maybe you could offer to pay the appraised value to the original owner, and agree to repay the holder of the contract for deed's down payment, which if it were 10% for ex at 80k would be <10k. 

You can invest in real estate, private equity, trust deed, tax liens, precious metals, crypto currency, and much much more.Few considerations: With custodial self-directed IRA you would have to go through IRA custodian for each transaction (you will have to deal with delays, bureaucracy, red tape and asset/transaction fees). 

I was inquiring with a Face Book person who connected me with a Crypto Guru Queen that was trying to explain the  business, but I'm challenged  in my thinking on funds that I cannot physically touch , like it's "cyber space" currency, not sure if I should trust this FB person with my money