How are you doing?
That is a great question, although having sold "mid-century marvels" before, you might not have to do as much as you would think.
Why, because a lot of the "distressed properties" out there are absolutely hideous!
If you actually have a traditional sale, meaning the homebuyers don't have to wait 6 months to have their offer labeled unacceptable, as in a short sale. Or if the buyers try to buy a foreclosure, but they can't get the loan because the property has too many FHA issues, then you are that much more ahead of the game.
Hopefully by now, you have taken out the dreaded pea green shag carpeting along with the non-matching pale purple wallpaper. And if you have made the wood paneling go back to The Brady Bunch, then other then painting, adding good current towels, bed coverings, and landscaping tweaks, you are already almost there.
Also, over 80% of todays homebuyers start their search for a new home online. I would ask to see, from any prospective listings agents, pictures of similar properties that they took. Anyone can make a million dollar home look good, it takes a lot more skill to "broadcast" your atomic ranch to the rest of the world.