I’m looking for a way to efficiently pre-screen tenants.  

My current feeling on this is that my properties have always been clean, safe, and energy efficient.

The time it takes to get approval for the port depends on the efficiencies in both the HAs involved in the process.  

You having an online presence and marketing tool to get high quality tenants quickly and efficiently. 

It is a 3-day seminar for people to start pulling in leads and managing them efficiently.

Yes other cities in other countries have much better, cleaner, efficient, etc.  

For real estate, Buy low, Rehab/repair/ add value/ operate efficiently and manage money/ sell high...I started out by living under my means-drastically-and house hacking small apartments.

Since they are individual units, I am not sure if they can be bundled into one loan of 5 (my guess is that one loan is more efficient than 5 individual loans), but not sure what the best loan type for this scenario would be.

I am replacing my 75K BTU, 80% efficiency, natural gas furnace.

I doubt a product made of sheet metal alone would be efficient enough to get up to that temperature.