The benefits of a new system on reduced capex are nice, but installing central air where there was low-maintenance window units before seems like a wash.  

If you are going to buy 2 properties are you comfortable with the maintenance and upkeep and potential problems or will that cause you to be over-leveraged if something happened? 

Have an investor loan you that amount of money, and give them all of your cash flows (after a maintenance reserve) until they are paid back. 

Even the T-12 can be manipulated with deferred maintenance or even off the book expenses to prep the property. 

A lot of older MHPs have serious deferred maintenance on the sewer, so you need to know what you're walking into!

That area pictured is a great place to start looking for lower-maintenance SFH rentals that are around the 1% rule (avoiding the more expensive pockets like Castle Hills or Shavano Park).

I think getting a maintenance plan would be a good way to ensure the filters will get changed at least twice a year.

What I see on my properties is that I pay somewhere between 1200-1500 for the price you have used(in GA).Also, you should stress test your property by changing numbers like 20% vacancy, 30% maintenance.

Since you had to ask your question, you are not ready or qualified to invest other people's money and before you do you need to have a conscience and be aware that you are putting other people's money at a high risk if you don't have what it takes to find the right property, have the ability to manage tenants, have the ability to do the math, keep the property in good condition, have a good handle on how to do clean recordkeeping, how do accurate bookkeeping, send your investors reports, how the taxes work for every party, how to deal with contractors and maintenance, how to evict tenants and get new tenants quickly and the list is much longer.

Now for the explanation.The benefits of being a landlordWhen I bought my first three-family apartment building over 11 years ago, I was the manager, maintenance man, plumber, carpenter, leasing agent, housekeeper, counselor—you name it.