And that's not even getting into whether the "pro" would properly diagnose the problem. 

Those that don't work with borrowers that have rentals, may not have the knowledge of how to set the loan up correctly and properly count all income from all rentals. 

As such, it is necessary to learn how to properly identify rehab costs and there are literally hundreds of threads on here on that topic, many of which I have gone into great detail on as have others.As an example, two identical houses on same street, model matches.

What is the proper process to successfully partner with others? 

You can literally buy your wealth, and constantly be lowering your debt ratio with proper planning and execution. 

The sellers accepted the offer and signed it, but after 2 or 3 times of asking for the info and fixing the disclosure sheet, we still did not get any information or the disclosure sheet filled out properly.

In the case of C-class, the management must be firm and fair...without proper stopgap measures to make sure that tenants pay, things can get away from you. 

Anywhere, even Shreveport is a good place to invest if you have the right strategy and buy properties properly.

We would like to know how to properly transfer the leases from the tenants to us so that we receive the rents from now on.  

If so, the test for corporate (business) limited liability is whether the corporation is separate from the individual, whether the business holds itself out as the owner rather than the individual and whether the business is properly capitalized to avoid foreseeable loss.If you have good insurance, that's basically the same thing as being properly capitalized to avoid foreseeable loss, but you have to realize that any injury over the $1mm mark is probably coming out of your assets.