I hold my properties longer than most of other investors that I know, this helps insulate my properties from market fluctuation.

I like to have extra cash flow and money for expenses all in one account to keep it simple, instead of transferring out money every month and making sure enough remains to cover expenses (which can fluctuated).

In your opinion, what would recommend a flat water/sewage amount be included in the rent or a fluctuating amount based on usage?

Military members are less sensitive to market fluctuations and economic downturns, I can also reach our to their commander if they miss a payment.

The rates fluctuate every week so banks are swamped with paper work and appraisals.

I wouldn’t make any long-term decisions based on the short term fluctuations in trends.

I like the idea of vacation rentals, but in times like this “Virus situation” the vacation REI might be more exposed to fluctuations in my option, and I believe you should have a good and honest property manager, that’s key for a successful real estate investment.

And they fluctuate wildly based on the day of the week.  

Here're a few posts for you:https://www.biggerpockets.com/member-blogs/10850/86621-six-steps-approach-to-getting-started-in-real-estatehttps://www.biggerpockets.com/member-blogs/10850/86626-the-pros-and-cons-of-investing-via-real-estate-syndicationhttps://www.biggerpockets.com/member-blogs/10850/85351-nothing-will-work-until-you-do-maya-angelouhttps://www.biggerpockets.com/member-blogs/10850/81214-what-goes-up-must-come-down-or-market-cycles-fluctuation

Add some holding costs, professional fees, potential market fluctuations, and $1.475+$850+$150K and you are at ~$2.5M (not factoring in the holding costs, professional fees, etc.).