an inspector will tell you everything wrong with a property, from the minor to the major. so if the inspection report finds a bunch of electrical issues, yes, you'd need an electrician to tell you whether they are $200 fixes or $2000. 

I would try to get a few properties quickly so that when something goes wrong in one, it will be offset by the gains in the others.

The vast majority of lawsuits against Landlords are for wrongful eviction, security deposit disputes, and Fair Housing Violations.

.✅ Radon is a radioactive gas that is released from granite into the soil that is known to cause cancer, and can leach right into your home.✅ Any home built before 1980, likely has cast iron or clay sewer lines which will deteriorate over time.These issues can be avoided.

And yep, I was made aware a couple of years ago of that 12 person max and/or I think 4,000 sq ft limitation (or some size anyway) that requires a sprinkler system for all new construction.I don't think they're that wrong for implementing the requirement. 

Jason Stofer if you make that kind of money I’d recommend stop spending it on direct mail and pay down debt, especially credit card debt.The whole “find a deal the money will come” is often wrong.

Also, you don’t say what he did wrong and what you did to bring the defects to his attention so he can correct them.

I think that is where I am going wrong.  

Is my math wrong or is there another better way to do this?

There's nothing wrong with seeking concessions if there are issues that arise in the report, but using this as a strategy will garner you a reputation within the community if you are repeatedly going under contract and then seeking large re-trades.