She came out of a recent divorce with close to $1M liquid and a credit score in the 800's, has history as a successful GC/landlady, but after liquidating her previous rental properties due to divorce 2 years ago, no longer has recent income.

and dump the rest into a brokerage account which holds ETF's invested in essentially total stock market indexes (VTI, VOO etc.).

I have good credit, but not sure how to obtain financing with my current income so I am looking for financing options that don't require me to provide 2 years proof of income.My current plan is to do the following but would like a professional opinion before proceeding.

I noticed on the forums that many landlords do not find Zillow background check and credit check reliable.

My credit is good. 

So, before I close on this house, I would like to hear all ideas on the best use of this money taking my goals to account.

Fill out your article of incorporations which is not hard and you will need an EIN number so you will have to open up a Business checking account.

Also, your credit  matter to an extent as well as if the property will cashflow(some lenders use the market rent) or if there are already tenants in the property with signed lease contracts.

Also, this year of 2022, the actual deadline is Monday, April 18th, thanks to an obscure holiday.Where can I find a great accountant to prepare my taxes before the deadline and avoid an extension?

...I wouldn't.To make matters worse, the property isn't appreciating (because it's in a low appreciation market, or even a depreciating market), and the tenant pool is primarily made up of people with bad credit, low/no income, and a history of property damage at the previous places they've rented.