I get a DSCR loan on the property and we try to suck out as much money as we can to leverage the property at 75% of the ARV.

Will depend on several factors like the type of property, type of tenants, your risk tolerance, other assets you own, your estate planning, laws where the property is located, etc.

I am considering a 12 unit multifamily property in my home market of Harrisburg, PA. 

If you're willing and able, I do recommend the "house hacking" strategy which is just a fancy name for buying a rental property and living in one of the units, because you'll get very favorable financing - an owner-occupied fixed-rate 30-year mortgage.I'd also say, analyze that property as if you won't live there and it's a pure rental, and make sure the property is still cash flow positive if there's a tenant in your unit because then you'll know if it's actually a good investment.And when you analyze it, include payment of a property manager in your #s because if you don't, and doing so would make it go cash flow negative, then you've just bought yourself a job because you literally can't step away from managing it without losing money.

I now live out of state, but I still have a 4 acre property near the crossroads (on 111 & near 77) in Lavaca County, TX that I need to do something with.

I listed my property for free in Macon, GA and they've been connecting me with tenants who want to Airbnb.

Similarly, if you put several Class D tenants in a Class A 4-plex, what do you think will happen to the property?

Self-proclaimed Section 8 guru's online claim to do the latter and then find Property Managers after they purchase the property in whatever state, but I don't know how real that is. 

The picture makes me think of a "mini" hotel or some type of destination/STR property. 

I have 3 homes managed by a property manager.