An "enviable" position to be in.
IMHO Buying a 30+ year old boat will depend so much on the way
that it has been maintained that the makers name is not a first
consideration. Look in all the lockers. Look for grime and oil in the
bilge. "thump" near deck fittings (to check for soft spots). Check the
condition of the sails and standing rigging. Include your wife. (cause
if she doesen't like your choice......) If you are still in doubt
perhaps you can find a local "surveyor" to look it over before you sign
the check.
Best wishes. Everett