Wheel bearings will have no problem sitting for decades as long as it isn't under water or wrong lube used on front bearings. Some do-it-yourselfers use chassis lube unknowingly.
I'd worry about core (freeze out) plugs, carbonator, fuel pump especially the bypass valve, distributor mechanical advance binding and idiots on the highway.
Start spraying brake bleeders with brake fluid or penetrating oil. I'd gravity bleed all brakes just to get that old fluid purged out of there.
Still have not seen a Cadillac engine with any performance issues due to a timing chain. I did see one with 16 piston skirts lying inside the oil pan.