You’re not overleveraged, so you’re in pretty good condition to ride out a downturn.  

@Matt Wan Many lenders require wet signatures on at least the Promissory Note but if yours does not, as a US citizen you could do the entire signing anywhere on the planet with a good internet connection + mic + camera via Remote Online Notarization (RON) for less than $200.If wet signatures are required, the answer then depends upon what foreign country you are in.

Self-Storage gets good rent but it can be a hassle to manage & deal with.

You gave me some good insight.

What other options would be good?  

Do you have a good eviction attorney? 

Good luck.

As far as educational material, there are some good courses on underwriting in Udemy.

I wonder if an inspector's license might be another good addition to our repository.

Both are good though!