However, I can't get over the thought of grandma or auntie fee forgetting to turn off the stove down stairs and setting the place on fire.What would you do?

Of course, Auntie Mabel, there is absolutely no chance that this guy might decide to manufacture meth as his next venture, even though it's extremely lucrative and all he needs is a kitchen. 

Ideally someone local as I will also be having the house inspected and possibly appraised.My aunt is moving out of her house of 20 years.

You are walking a very fine line that usually doesn't get tripped up... until Sammy the third cousin twice removed on Auntie Jane's side decides that you swindled Auntie Jane out of what her property was REALLY worth when you put it under contract and then sold that off for a profit instead of listing it on the MLS as an agent should do.  

My aunt is a real estate agent in Seattle & also has multiple Air b&b's in Seattle & Tacoma. 

Plus, I think it helped that I looked like their auntie LOL.

If there's not enough time to close, I'd bring in the cash, which I borrowed from my sister, cousins and aunties. :-)I completed 2 cash out refinances in December and 2 more in February.