Japan also does not have laws preventing foreigners from purchasing property in their country. 

That cannot be prevented. 

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 

On multiple occasions he had us wasting our time looking up unnecessary tax forms online because he wasn’t well versed in tax code.

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.

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.

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. 

Find the strength to say not to unnecessary expense to yourself, friends, significant other for a few years to start building your wealth.

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?

Not having either leaves you, the tenant and the owner of the condo open to unnecessary risk.