Divide them up in various ways - by age of owner, length of ownership, presence of children, price range, equity, etc.

I am 22 years old and have been jumping from job to job the past couple of years not finding anything to my liking. i'm still trying to figure things out for myself but i know i want to be financially free by the age of 30 and i want to work for myself.

If someone is under 18 years of age, are they eligible to wholesale?

Let's assume our tenant's name is 'abc' age approximate 43.

I'm not looking to get rich quick, just to build a real estate portfolio to supplement my military income so I can retire at a young age.

Your age is irrelevant.

My son is reaching the school age so I am looking to buy a house in the preferred school district.

are you referring to the property age?

@Jason Zhao, yes we do background and credit checks on every single tenant over the age of 18 unless they are still in school and with their parents. 

The numbers look ok but that can vary GREATLY based on the ares, the age of the building, the age of the major mechanicals, how much work will be needed once a tenant moves out to make it rent read and other misc variables.