I use one unit as my primary residence and have been using the other unit as a mid-term rental (~1-3 month stays) to cover the majority of my mortgage.

We have a fee for this in the lease but how do you cover for this in the lease ?

I think we've especially bonded because not only was it one of his first purchases, but also one of my earlier representations as a facilitator of multifamily investments! 

It's likely coming.That just about covers it. 

Looking at online real estate licensing courses, anything out there with continued education options that does a good job of covering creative financing?

Comprehensive CoverageBasic Coverage: Covers specific risks like fire, theft, and certain weather damage.

We will cover the story in detail, with regular updates, through to resolution. 

I think we've thoroughly covered all the negative reasons or "dangers" to watch out for investing in Mexico. 

I'd minimize the risk of having negative cash flow in the first 12 months when things are the most unknown and I'd be able to increase the gross rent of the property which should give me a better loan or at least bigger margins to cover my risk for negative cash flow. 

You could use a floor leveling product but check the square feet to see if the product covers large spaces.