Tips on inspecting/buying a 40 year old car?

I am planning on looking at a '73 Scamp and wonder if you guys have any advice or things to watch out for. I realize that the fact that he confuses "Dodge Duster" and the like means he probably is not on this forum...

Here's the ad:

1973 PLYMOUTH SCAMP. All original V8 318 classic cruiser. One family owner -- I bought this from my great aunt many years ago and have all original servicing paperwork. I'm in no rush to sell. It's been aging like a fine wine under a car cover and regularly started. This is Plymouth's version of a Dodge Duster and a variation on the Valiant. If you are looking for a PURE and UNTOUCHED classic car with only 79,000 original miles, this is your project.

Recently serviced with 4 new tires and new battery
Power steering and air conditioning
Automatic transmission
Original cream yellow paint. Original trim with some nicks on body.
Re-upholstered front/ rear bench seats and new black hardtop
The Interior is clean. Some cracks on the dash.
Door Panels and dash are original and look good.
Lights, turn signals and dash lights are all in working order.
Original radio is in place but does not work.
The floor pans and trunk are free of any major rust and are in good condition.
The engine compartment looks good and all hoses, wires etc are in working condition.
Added dual flowmasters with minimal under-body rust
California Clean and Clear Title. Mileage on Odometer 79,000

Overall this is a very clean car in working mechanical condition and is ready for its next chapter with someone willing to give it love.

Asking $5,000 or best offer.

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Here are some pictures:










Additionally, the seller provided me with some more information in an email when I asked about whether it was registered, about the brakes, etc.:

"It's registered and gets driven once every 6 months or so. Breaks are original and I believe you are right... Disc in front/ drum in back... They are sensitive and take getting used to. Not sure about the Flowmasters. I put them in 20 years ago."

- and -

"She's a great car that drives well and will need a little TLC in the coming years.
The car was bought new by my great uncle and sat covered in Bakersfield driving to the grocery store and back until 1991 or so. Then, my (younger) uncle took ownership and shortly thereafter I bought it around 1995.

It has a 2 bbl carb - probably original. By TLC, i mean - it's 40+ years old and has never been rebuilt. She starts every time after doing my few tricks. The engine loves to run but the suspension and such bounces like the cruiser she is. Breaks have always been touchy but you know how that goes if you remember the duster breaks.
" [I mentioned my 73 Duster]

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Any things to watch out for?
Does it seem like a good deal?

Thanks!