Here is an article i found with a simple google search: about $5000 but i thought quiet title in georgia was actually higher.Tax Deed Services For Owners of Tax Deeds - Gomez & Golomb LLC

Are you sure you can borrow the $500k of the $1M purchase since you won’t be the owner?

If there issues that need to be worked out with the 6-unit property, I would utilize that as a negotiating tool to work out a seller financing strategy with the current owner. 

The original deed listed multiple owners and percentages including her 8% interest, and now myself and the other owners want to sell the property---how do we get this retitled into my account (or my name) in order to facilitate the sale?

I've always gotten a signed "authorization to release loan info" from the owner on record. 

Are the other parties to the agreement the property owner sharing the well and maybe an HOA?

Must have multi-family zoning and be 500+ feet away from another non-owner occupied STR or you must live in the property for 6 months out of the year. 

FHA loans include oneproperty per FHA loan, owner occupied for at least 1 year, and can apply for new FHA loan in 2years.

Do you know if the eviction process was started by the owners before foreclosure?

A few years ago I got caught with a number of housing units I built in Philadelphia I planned to sell to owner occupants if not for the  2022 unexpected rate increases.