Typically, depending on the LTV - and we wouldn’t go above 50%, we’d be looking for a 18 - 25% annual return.  

My recommendation is that you make it a tenant responsibility in the written lease, then send reminders every 3-6 months, depending on the schedule.

Our Teak is for the overseas market so not dependent on the Belizean economy. 

It defiantly depends on what area you're looking into.

But that depends on the level of rehab, price point and so on. 

Depending on your state you may or may not be allowed to accept a partial payment during the process.

And this does not include the real world issues, namely are you even allowed to convert this property to a four-unit and taking a single family to 4 unit is very likely going to cost more than $110k (but this depends on the actual layout and work scope).

You'll most likely find your staffing costs to be in the neighborhood of $1,200 to $1,900 per unit per year, depending on property size, class, and market. 

When you eventually sell, your potential market is investors - this can mean many things, depending on the state of the market when you sell. 

That highly depends on your pay structure.