*Immediately throw away moldy food*Remove visible moisture from accumulating on any windows and doors as soon as possible.

I get the bathroom it should have an exhaust fan.Kitchen => grease accumulates on the fan.No one sits in the dining room for hours like a bedroom so it’s relatively more of a waste.

The characteristics defined by the location include:Total capital required: If you can grow your portfolio using accumulated equity by cash-out refinancing, which is only possible in areas with high appreciation, you'll need considerably less capital from your savings.Inflation protection: Whether rents outpace inflation, enabling you to sustain your lifestyle indefinitely, only occurs in cities with significant and sustained population growth.Income persistence: How long your income will last.

In the current market with the prices of homes being so high does it still make sense to be investing in real estate or to be accumulating cash and waiting to see where the market goes? 

I love that you rented two of your bedrooms as mid term and short term rentals and made enough to pay for the mortgage and now you are going to use the rental income to show you can qualify for another property.This is an excellent strategy and one more people should consider doing in this inflationary environment to offset the biggest cost in their budget--housing.As you rightly point out, you can use this strategy with every house you buy accumulating a portfolio of houses that you originally started out living in as a primary residence every two years.Well done and more people should consider doing the same, or rent their garage, or shed, or a boat, or an extra car.Love it!

Base case would be to sweep to a money market fund or some kind of cash fund where the payments can earn interest until you accumulate enough to reinvest into a new note.

If you wait 30 years to start budgeting for a roof, the house will rot into the ground from leaks before you have accumulated enough to replace it.

Also have you considered any additional weight of snow on that might accumulate on the lattice and the rafters?

People who we would consider poor, seem to accumulate an enormous amount of small objects.

As you accumulate more properties and experience you’ll set a reserve that not only handles capex events, but also other uncertainties (ie vacancy, changes in personal finance, etc).