Think about all of the time, money, and energy it takes to mail to the same person 5-7 times.  

Being young, you have the advantage of high testosterone, plenty of energy and plenty of time without all the hassles that come with a full family.  

The third unit and the 1st unit share an electric meter however the 3rd floor has it's own gas. 

I am all in on all electric and as soon as the roof tiles come out I am reroofing my peronsal resi.. its only about 60k... then I will be self sufficient even here in gloomy gus Orygun

The house is 3 level but the basement is not finished, it has a walk-out, electricity and AC, plumbing rough-in for full bathroom - in fact it used to be a fully finished basement but everything was told bare due to water damage a few years back.

I would need licensed sub contractors for electrical, plumbing, HVAC, etc. if I were flipping/renovating and had building inspections to deal with.Some would suggest you obtain a real estate license for REI and others would say it is not necessary.I am unfamiliar with OKC laws.  

for this call, you might withhold the info that the house is already divided up. if the property wasn't properly divided, the Landlord probably pays the electric, water, gas, trash, etc.  

Make sure you have a HVAC/plumber/electrician/ etc ready to go, because interviewing when you're doing the work wastes time and energy.    

Even if you end up not using or agreeing with it, it is a good way to educate yourself.Yes - the fact that tenants pay their own electrical / gas / heating will reduce your expenses by a few points but you are expecting to run this property with only $25,000 in total expenses (less then 25%!). 

It will be a long ride but you have the time& energy to accomplish your goals.