No one ever becomes wise without making mistakes, so worst case scenario you learn a lesson and move on.

I have been much more responsible and learned the importance of credit through this journey and won't be making the same mistakes.

Did I make a mistake?    

It all started when I got run over on a home back during the mortgage crisis and rather than just be a victim, I started to learn the industry to make sure I didn't make the same mistake twice.

In my opinion, and again I may be biased, I think you are making a mistake by trying to go the FSBO route.

The C- was just a mistake (maybe it was a D).Most of the area near me would be considered A or B at the least.  

I am a bit nervous because this is our first round and I know we will learn a lot but no doubt make mistakes.

When tenants make mistakes, you can tell them where they went wrong. 

It turns out that was a mistake.

Luckily the banks aren't repeating the same mistakes again and an increase in interest rates will also most likely lead to an increase in rents since more people will choose to continue renting rather than purchasing a home.