It's not that complicated.   

Its not real complicated, its purely a math question.

However, due to it being:1) In the state of California2) A shared home, rather than an outright external property being rented...the default insurance company on offer advised that many carriers are pulling out of CA and that I should go to a local insurance agency.My current insurance for home policy does not offer a "home-sharing endorsement" but only a separate renter's insurance, which would complicate things, since it's for traveling professionals, and they're not going to be booking for 12 straight months.

In most cases, neither is warranted.Warning: I am not an attorney, and this can be a complicated topic.

Complicated rooflines, modern details that require a bunch of steel framing, excessively large great rooms, spa-like bathrooms, etc would push you into the $1,000-2,000 range.  

You raise a lot of good questions.Regarding USD fiat, it gets a little complicated, but most dollar creation is actually done by the banking system via debt. 

In most cases, neither is warranted.Warning: I am not an attorney, and this can be a complicated topic.

Some areas may have restrictions that could complicate things, particularly around who can provide alcohol and to whom.If wine isn't an option, you could consider alternatives that are still local and personal, like a handcrafted bottle of olive oil from a local farm or even a basket of locally sourced snacks.

The seller retains legal title until the contract is fulfilled.Advantages:Lower Upfront Costs: You can avoid closing costs typically associated with formal closings.Control: You can take control of the property to make repairs and sell it while leaving the original financing in place.More Flexibility: Compared to a novation, a land contract offers you more control over the property since you hold equitable interest.Risks:Seller’s Cooperation: The seller retains legal title, which can complicate things if they change their mind or their financial situation worsens.Resale Issues: FHA buyers may require the deed to be in your name for 90 days before they can purchase, which could slow down your resale plans.Subject-To FinancingHow It Works: In a subject-to deal, you take title to the property while the seller’s existing mortgage stays in place.

Place "how to" signs next to any complicated amenities and front load your messages to make guests aware of any quirks.