Here is a recent bulletin from PSI with more information on the exam & requirements for becoming a broker. 

The husband told us to apply through Zillow, so we filled out the application on the platform.Before completing the application, we spoke to the wife over the phone to clarify some questions.

There is a cumbersome way to do it on paper forms, but you should not.The only sensible way is to submit your 1099s to the IRS online, however not directly with the IRS.

Best of luck on your real estate future, it's been a fun adventure for me!

Although I've considered a future line of credit against the property as my best long term option, I would need to pay down the remaining balance first.

That is online with what we’ve been paying when we were able to find help.

I would like to build a duplex on it for long term rental income.

But in general, your biggest risks are not necessarily what's the maximum rent you can get, but can you find a reliable tenant that will always pay and pay on-time.

I'd also add to that that you are paying a 20% withholding tax on gross rental income. 

There is currently not a mortgage on the property, but due to the s-corp ownership, refinancing is not going as easily as I'd hoped.