I have no particular area that I'd like to start with or focus on, but probably prefer somewhere in the south of the US due to my strong aversion of winter.

However, without more information on what your preferences are, it is difficult to give you good advice.

The calculator finds that the annualized interest rate, or if you prefer return on investment, is 9.43%I hope this clarifies.  

I prefer graduate students whenever possible because they don't have time for partying, are of legal age anyway, and generally tend to be by themselves or with a partner so it's more like renting to a couple.

Consider house hacking when rates and prices are a little more balanced with reality.I would prefer a duplex/triplex but I know getting into a single family home and renting out the rooms is more accessible .

It simplifies the process since Zillow handles credit, income, and background checks for a small fee paid by the applicant.Background Check Services: If you prefer not to use Zillow, consider using services like MySmartMove or RentSpree.

Some people need 2% above the borrowing cost (8% cost of hELOC you gotta then make 10% + etc) and others will want to double their cost of capital or 200% so it depends.Everyone's going to give you their anecdotal experience or what their preferences are so its good to hear it all and determine your own.

They are coming to your property if you allow them or not (you cannot forbid service animals) Consider the facts: https://www.dogster.com/statistics/pet-travel-statistics-tre....Top 12 Pet Travel Statistics78% of American pet owners travel with their pets each year.54% of cat and dog owners plan to travel with their pet.58% of people would prefer to travel with their pet over a friend or family member.52% of travelers base their travel plans on accommodating pets.About 75% of luxury, mid-scale, and economy hotels allow pets.In 2019, a total of 404,556 animals were transported by airline.Nearly 64% of travelers prefer to travel with pets by car.42.9% of people look for a destination with hiking and fresh air for pet travel.Dogs make up 58% of the pets traveling around the world.37% of owners take shorter vacations because of their pets.10% of travelers have hidden their dogs to travel.27% of dog owners go the extra mile for their pets.

I wouldn't want someone to hold back, I prefer honesty and straight talk. 

However, what if you prefer simplicity, limited risk, and are living off of the income?