A subject to deal is to prevent the property to be in foreclosure not to allow the seller to foreclose to you.Use other people's money and not your own.

That cannot be prevented. 

Quote from @Neetu Patil: For California, I highly recommend you join the California Apartment Association (CAA) where you can get forms, training, laws, legal help, etc.You are in the most regulated, litigious corner of the world where tenants can literally stop paying rent for years and prevent you from even inspecting the property.

Arizona has a statewide law that prevents cities from not allowing STRs and restricts local municipalities from over regulating STRs....CA does not.It's true that SB1168 now allows cities to require licenses and guest checks, but at least they cannot deny them completely.Just my .02 

With the new 5% down program they are also hesitant to have such a large upfront cost which prevents them from buying a second property next year. 

You may still take important efforts to expand your expertise and knowledge in the real estate market, even when your age may prevent you from engaging in some activities.

Assuming I could qualify financially (primary income plus FHA allowed rental income contribution from additional leased units), when I become the owner of the property, would that prevent me from using a FHA 203b to house hack a second property?

While Federal law prevents prepayment penalties, the lender and loan officer are on the hook if your loan is extinguished in 6 months (tehcnically 6 payments). 

With the right property manager, a little TLC and preventative maintenance, it'll be a cash cow for you. 

It's there to prevent hiding behind LLCs for shady reasons, including tax evasion.