You will learn the cost of maintenance/cap ex and how tenant quality plays a big role.  

The biggest mistake I see out of state investors make is relying on others too much for direction and guidance instead of doing their own due diligence and building their own team that they actually meet and interviewRelying on one person who alleges that they have a 'team' built already that you can use as well can be a costly mistake.

McKinney is thriving, but so are other parts of North Texas, and a broader perspective could reveal other great opportunities.Here’s what I’ve observed managing a significant number of rentals in the area:Bedrooms and Layouts:3-bed, 2-bath homes consistently attract the largest pool of tenants and have the highest occupancy rates.4-bedroom homes have grown in demand, especially with the rise of remote work, as tenants look for extra space to use as a home office.Square footage is less critical than number of beds and baths.Supply and Demand:McKinney’s growth is driving demand, but the quality of the location matters greatly.

@Polat CaglayanI've never seen a formula but here is a general rule of thumb for multifamily:The class of an apartment refers to the quality of the building, which can be determined by a number of factors, including age, location, and condition: Class A: These are the highest quality apartments, typically built within the last 15 years.

You have already admitted that you treat each person differently. 

The quality of answers to your are directly correlated to the quality of your questions asked.  

Are their listings detailed with good-quality photos?

My guess solely looking at your numbers is that it's an older/distressed property which means you have to account for more costs in capex. 2nd thought being it's not in the best of neighborhood then you'd have to take into consideration lower quality tenants/ neighbors and maybe increase expected vacancy and late payments.

A few things that newer investors should note:- it took 13 years to get there, you have to be patient- rents are high at about $1,750, so probably a quality neighborhood- looks like that is after vacancies, probably low turnover?

Many banks limit personal loan amounts.