You would need to establish that the seller either intentionally, or negligently failed to disclose a "material" fact.

At least it implies that the realtor is on-the-ball, has put together an investor-focused package, etc.

Often criminals will have packages dropped at  random houses and hope to pick it up if no one is home.

.😊  I calmed down and re read the contract again trying to figure out what  to screen grab for you and found that the home inspection clause box IS checked- which discusses inspection for material defects.  

My mortgage broker also told me taking out this rehab loan is also going to raise my interest rate around 0.25%.What I am trying to do is cover the parts of the rehab that don't take so much labor, and purchase the materials and DIY for the other parts that are more labor intensive.

Should labor be evaluated based on material costs? 

Mojo's lead store has affordable packages, including the reverse look-up service.SearchBug - https://www.searchbug.com/batch/phone-name-address... is a nice reverse look-up service website where you pay as you go.

I have a tuned lease package for individuals, but I don't know how much of it will apply in this situation.The interested business is most likely going to use the property for work visa immigrants to work in a nearby resort, probably from eastern European countries, but this is just a somewhat-wild/somewhat-educated guess based on local activity.

So we ended up doing a large package deal at a great price and it was a win-win.  

My realtor approached me with a package deal of 4 properties with a total of 6 units. 5 of the 6 units are occupied.