When you sell, you will likely get appreciation - but that is not the main purpose of your investment.Direct SF ownership might be safer - also, it might not be safer.   

All problems like transaction volume, or what incentives miners will have to keep validating transactions after all 21 million bitcoin are mined, will magically be solved in the future but the details on how are intentionally fuzzy because nobody actually knows and even a hypothetical answer relies on hypothetical future advancements in technology.    

Our lot size is 7300 sq ft and main house is 1700+ sq ft.Location: San Jose, CA- We were thinking to potentially design the ADU such that we could have a wall (or a door) that allows us to separate the ADU into a 1 bed/1bath for self use (or rental) and another part which could be rented separately on AirBnB as needed.

I am willing to give up control to benefit from the experience and efforts of a good operator that I trust when I have the capital to deploy.The main reason for this has to do with time.

This investment was mainly for the new washer and dryer units in every property.

The MTR being upfront and honest about his or her intentions for the property is critical to that.

HI Renee,Try looking into zillow/Redfin and see what your potential rents you can get near the neighborhood by filtering the bedrooms/bathrooms of the intentional property that you are planning to buy.

My main point is that regardless of its size percentage wise its very high which has impacted Jacksonville a ton.https://en.wikipedia.org/wiki/Metropolitan_statistical_area

You will need it on this journey, regardless of how well intentioned you and your GC's are.

It currently seems I’m not going to be coming back to the states anytime soon (given the upcoming projects within the next 3-4 years) but would really appreciate any advice on investment rental property strategy as so to start building the foundation for generational wealth/passive income.We have saved a substantial amount of money  for which the original intent was to buy our future primary residence with all cash if/when we moved back to the states.However, that’s not what’s going to build generational wealth and would rather put that money into passive income investments hence, real estate rental properties.