Then you’d want to budget for providing minimum service to condition that extra “interior” square footage.

The extra $5000 doesn't seem worth it.

There are shortages on everything right now and anything custom is likely to take extra time.

The report from Bigger Pockets seems like a good "base hit" to me, but I'm spending $57,500 just to make an extra $400/mo.

And it was used to make Crystal but again now mostly lead free crystal which as far as I can tell is just extra clear glass.

The rental market is hot right now so it probably wont matter, but in normal times, I like to pay a bit extra to get a 2-tone paint (tan/white trim) to make the unit stand out a bit, but again, just preference - I don't think either get you more in rent. 

They are like a back-up or an extra on top of where the liability portion of your auto or home insurance are not enough.

I know that what I could cash out and use for 2 more properties to cash flow an extra $900 or so per month makes sense on paper, but it just sounds like way too much!

. - over last 2 months property manager has made about $750 extra payment while I have lost about $2000 unexpected losses and it’s all a result of the property managers decisions.

It may sound nice to pay a 5% management fee but the extra fees can add up to be more than the other company that charges 10% with no add-on fees.