You can get tamper-proof shower heads that cannot be "screwed off" ... many manufactures produce one or more such models.We install low-flow shower heads (1.25 - 1.5 USG/min) in all our units and have never had complaints or issues with tenants removing them.  

In general, it is preferable to reduce or eliminate debt that is not producing cashflow before investing so your personal balance sheet shows more assets than liabilities.It sounds like you are in a great position being a year away from paying off your vehicle and student loans.

However particularly for high revenue or six figure producing properties, operators can theoretically employ a full time and designated manger for a lower total cost. 

In that way, it's much more cost-effective and produces strong results. 

To start, I'd do a Discounted cash flow analysis and cap it like a regular income producing rental....do you know the rent the tenants were paying in the two sales you showed?

You have to buy a property that will produce enough income to mitigae those items.

Others will reject the idea because you can't produce an income for their office and will likely be a taker, not a maker.My suggestion is to get a job with an established property management company.

I even turned off the hot water tank to save money (until my then-girlfriend, now wife, convinced me to turn it back on)—all to use these savings as my launching pad of capital to get into buying income-producing real estate and starting a business.Fast forward to today, the foundational skills and inspiring stories I absorbed from the BP podcast have given me the confidence to take action and believe in myself, significantly advancing my investment career.

She has yet to produce any documentation on that after I asked for it multiple times.

But as others @Becca F. pointed out California RE produced more millionaires than anywhere else historically.