Factoring in 8% for a piss poor property manager will sting, and could be the deal breaker.

Unless you are a spring breaker

Since you are going to have an electrician do a substantial amount of work after the demo to install all the new circuits, I consider this part and parcel of the rest of the work they will be doing.

Over the months, we got close to doing a cash for keys on two separate properties, however one of them had a second mortgage that was a deal-breaker (which I should've saw before deciding to market to them).  

And what type of things should I be on the lookout for as potential deal breakers?

If so it will be a lot less $3) do you breaker boxes need to be upgraded?

I don't know if this is a deal breaker or not.

Is it a deal breaker? 

Installed in flip house, circuit board flakey, cant fix board, replacement board $175.

The outside box was never upgraded and the inside breaker box was the wrong size.