I found the son on Facebook and sent a quick intro giving my condolences, expressed my interest in purchasing the property, and provided my phone # in case he decides to follow up.I'm in the process of preapproval with a couple lenders, and have reached out to a couple realtors in my area to see which may be a good fit.

You got some solid advice above check with your lender and get in contact with an attorney like @Bob Floss II who can help setup the OA.Assuming there is no pushback from your lender, you should be able to do a quit claim deed to retitle. 

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

What I think you'll need to find out from lenders/banks/credit unions is how much historical timeline they'll need to review to support the valuation/income.

If you are skilled in each of the areas above, and you have enough in reserves to cover the costs of when things do not go as planned, then you can likely attract money from private money lenders who want to get a return on their money and they see lending to you as a low risk way of earning a better return than in the other passive investing options they have. 

Find a private lender who would give you that debt for a lower amount.

You can also search Google and read reviews.

Look at the current reviews and see how people feel about the place.

Some of them continue to get positive reviews because investors receive their distributions like clock work.

So is it a matter or reaching out to lenders saying I'm willing and able to act as a broker and ask for their terms/rules?