As I suspected most arguments for wanting to buy and or live in California were weather related.

@Josh Ball mentions, there are issues with foreign investors but, nowadays, it's not necessarily on the tax front anymore.

Most landlords don’t go looking for a property manager until they’re dealing with an issue—tenant headaches, late rent, maintenance problems—so your marketing should focus on providing solutions, not just listing your services.Marketing Strategy: Combined or Separate?

Find a new friend.I would get rid of them for just one of those issues.

are you handy or do you have team of handyman when issues arise?

Only the interest related to the $50k of renovation use of the loan will be deductible (38%)

I would check your cash flow in relation to that $55k number to see if it's sufficient for you.

This is because DSCR loans do not follow/ pass consumer protection laws. when you live in the property, it creates massive problems for this loan type and the lender which would issue it to you. 

I am on the Neighborhood Building Owner's Alliance weekly calls, and we had this ADU issue come up.

STR insurance provides broader coverage, including liability, property damage (even non-guest-related), and gaps Aircover might not cover.For damages caused by guests, document everything (photos, receipts, estimates) and file a claim through Airbnb.