Eventually everything will be fixed or he will move out, be patient.

Be patient and find the right tenant. 

And be patient with sellers when you're trying for seller financing.

Just curious, mostly because I'm not the most patient person - how long did it take you guys to be at a level you're comfortable with?

Be patient, remember it is the tortoise who wins the race.  

You can save a lot of money, however their process is longer and you have to be patient lol.

Find an Real Estate agent that already owns rental, be patient and buy by the numbers (use BiggerPockets calculators or the equivalent). 

We have to constantly remind ourselves to be patient, we have unit one and it is going very well, just passed a year with it as owners and STR managers (And cleaners!)

Be patient and you'll find something.

If you're looking for a house hack I would wait patiently for the right 2-4 unit that works well for you and your own individual needs or I would buy an older SFH with an accessory dwelling unit (or the opportunity to add your own or convert an unused structure on the property).