I think our courts would find a $600+ charge to be excessive.

Seems excessive to me.

If you have the capacity /space to make one per unit this might be the time to do it, if that means they pay for the electric/fuel. 

Just know no matter how much planning you do, you will be making endless runs back and forth, almost every day, and it is what it is my friend- BUY MORE THAN YOU NEED and then return all the excess all at once using the card(s) you bought it on at the end of the rehab.

It also states no fuel-operated space heaters and that fireplace is never to be used as a heat source.

I was looking at those two formulas and thinking to myself this seems a bit excessive for rental property investing, thanks @Bjorn Ahlblad! 

You can get an Excess or Umbrella policy that provides additional coverage. 

Buying out of state is fine you will only have an issue if you go with a lender with overlays or requires landlord seasoning.They may question your ability to manage the property if you are out of state in terms of excessive mileage away.

No issues with shower windows, in fact the window can be a benefit to excessive moisture and potentially mold.

The Pandemic housing market, fueled by historically low interest rates, began in the Spring/Summer of 2020 and arguably ended in late 2022 or Spring of 2023 with rising interest rates.