While the approach you lay out is appealing, it is a reach for myself and my partner in that we both want to embrace the learning curve associated with venturing in to real estate investing vs. relying on other experts.  

BUT, *only* 2 of them looked appealing to me. 

The idea of finding a project or deal, or turning something in disrepair into something desirable appeals to me greatly.Over time, I’d to like to develop a strong portfolio that could include a mix of different investments.

@Adam TafelI agree that allowing pets apply to STR's as well as LTR's.I make all my properties pet friendly and make more money because of this and appeal to a larger audience.I believe that a STR can make more money that a Medium Term Rental, but it is more work due to the increased turnover.Congrats on finding a niche that works for you.Did you have any trouble booking your Medium term rentals due to CV-19?

I have some rental  properties in Beaver and Washington Counties and would like to look into filing tax appeals.  

Well, if I was seller, I wouldn't allow an inspection without an accepted offer.However, you should see it in person to look at things that are expenses like:1) Siding and paint2) Roofs3) Windows4) Paving and grading5) Any evidence of moisture invasion like warped boards.6) Is it sited well and have curb appeal?

Also, I am a young investor and there does seem to be something very appealing about the idea of building reserves for a rainy day, in light of current situations. 

There's either something that's just not appealing to a regular home-buyer, or they're priced too high.

Have them use the following factors to determine whether you have a comp or not: age of subject (within 20 years down & up), style of subject (try to identify the approximate baseline per sq foot sales value of each style), square footage (within 200 square feet up & down), number of bedrooms (if subject has 3, you have to look at 3 or more; less than 3 bedrooms are typically less valuable because they appeal to single people instead of families), number of baths (1 is bad & you need to compare to properties that only have 1, 1.5 is less bad, 2 is good, anything more than 2 is good), parking (off street vs. on street & garage vs. no garage)2.

Of course, this punished the good operators that stay at the market.3) Suburbs with large employers or further out suburbs that are growing with little new construction4) Utility billing potential since water is the fastest growing expense here5) No major rehab projects, the rent growth market looking a little gloomy for the next few years to amortize the cost.6) 3 bed and 2 bed/2bth are appealing due to lower turns and relatively lack of supply.