A couple other recollections came to mind.
Very good the PO added the ss mast supports ( they should transfer the load to the ( oak ? ) supports on either side of the cabin sole and then the hull/keel ).
Also cool the PO added the forward lower shrouds - factory standard after around HIN 125 to 150 - though not on mine when I got her.
I remember thru hulls were an issue - cockpit and sinks ( ? ) were only fiberglass molded into the hull. If still there sooner rather than later they should be replaced with proper bronze seacocks.
On mine the cockpit lockers were accessed by removable teak ( or mahogoney ? ) panels that could come loose in a blow or such and should be replaced if not already.
Atomic 4's are incredibly easy to keep running as long as you run the bilge blowers and always check for gas fumes/leaks - they've passed the test of time. Oh and check the gas tank - it should have been replaced by now otherwise the ( monel ? ) tank will have deteriorated where it came into contact with its supports - sea water/vibration and such. Also the tank should have grounding between the tank/fill/hull etc to prevent static electricity ( explosive if static isn't cleared before starting to refuel ).
As already mentioned - if you should for any reason hesitate - please provide the owners contact info as she really appears ( on the web site ) to be refitted very well and any sailor should be proud to own her - esp at the price you're talking about.
Good Luck
