Any assumptions about standard or quality of construction (materials), the parking or other details that would not impact the square footage and style (brick, wood, steel frame, etc)?

But since you are paying a premium for a finished house, you cannot bank on any appreciation, that should be bonus if it happens. 

The nominal impact to your premium cost is much less than the administrative cost of a whole other LLC.

We are doing a couple different flips in a neighborhood where the resale price is 70k to 100k depending on sqft and house featuresThey all have original double hung wood windows (6 panel lower and 1 piece uppers).

The wood is very thick, probably 50% thicker than stock cabinets.  

Stepping down when you get out of bed in the morning on wood or tile is cold, and with families, it's more comfortable for kids to play on carpet then hard surfaces.

Major repair of a tile roof is about $30,000.Keep the old wood frame windows if you can.

Tax Title Services is willing to write a policy for those 12 months, for the supposed additional risk and for a premium.

Sellers know that exchange money often pays a premium because of the motivation.  

That means you are bidding premium to get tax deed in GA.