I do not want to discourage you but this is a big project that could easily turn south on you and leave you with a dead property or a significant negative cash flow.

Problem with brokerage operations is that if your key player drops dead, you have a problem.

Couple this with all the new buyers entering the market creating multiple offers and you have a deadly investor mix UNLESS you do as @Jeff Rappaport suggests and find your own "off-market" deals. 

I misread your original post and thought the plumbing was "dead" and the roof, appliances, etc. were all going to be replaced soon.  

I could be dead by then!

Also I am looking for a really good contractor who keeps there dead lines I know things can run over but not always.

We view it as a mortgage like any other, period.I've had people try to be sneaky, and then one of the last steps before ordering docs (AFTER clear to close from underwriting, and typically AFTER you have lifted all contingencies) is the fraud check, which sure enough shows the recorded lien, and boom deal dead. 

They might not like the idea of you making money off their dead grandma.

You also will get the name of the decedent (that's the dead person) and in some states you may also get the address where the decedent died or last lived.

Also what if tomorrow you get an offer to buy the house for $200K in the dead of winter, and he wants to jump right on it, but you being the smarter one, wants to wait till you get $210K, which you think you might get come Spring time.