If I could, pick your brain a bit more, how much do you typically set aside for things like CapEx/Vacancy?

Also sprayed the inside furniture and rungs.

@Matthew Giblin you're highly unlikely to succeed if you spread yourself over 4 markets.Recommend you do more research and just pick one of the 4 markets.Then do a trial run and see how it goes. 

We have lived in our apartment for nearly three years without any issues, but since April, new neighbors moved in upstairs, and the noise has become unbearable.At all hours of the day and night, it sounds like constant walking, furniture screeching, and items being dropped—even until 4 a.m.

I keep getting the run around and saying oh it's just the slow months and things will be picking up soon. 

Success often comes from picking properties with strong chances for rent income or those that can be improved in value.

So pick a market that is easily and readily accessible to you.

I also had to take time to assess all the furniture.

I do know that there are other sources to pick up knowledge.

Pick one or find one.