In addition, there's a church, Bethel Church, and they have a ministry school, Bethel School of Supernatural MInistry, which is expanding to have 3000 students.

Do I go about doing this by performing a Quit Claim Deed?

Additionally, it's a good idea to connect with a Property Manager early on.

FHA now allows us to count rental income from an ADU (additional dwelling unit) to help borrowers qualify.

My biggest concern is managing additional units and tenants.

The limit on scaling is your deal flow (mine never was that good) and time it takes to perform the value add (I got fairly quick for example, my last rehab did all new plumbing, electrical, and flooring.  

Additionally, we are approved with the Better Business Bureau (BBB).

It has 3 units, an additional dwelling unit in the garden level, and 2 garage parking spaces (which I've come to realize are quite valuable where the property is). 

Looking at this as a strategic addition to my portfolio.

Mortgage lenders will qualify you for a higher purchase amount for multis than they would on a single, because they will count the rent you will be making on the other units as additional qualifying income for your loan application.