Decent Deal? Anything stick out that should cause me to not make the trek?

Not much to add really, if it's a true #'s car in good shape it's worth it. Most sellers are firm with price on the phone(I don't blame them). That doesn't mean pointing out flaws won't lower price.
Under dash wiring is a big one. If it looks modified/cobbled than ask yourself how proficient you are at acrobatics and wiring? Replacing underhood wiring is waaaayyyyy easier than under dash. Less $$ less headache and less downtime.
Chk bulkhead connectors from under hood and under dash.
Chk ALL #'s. Rad cradle, trunk lip(ds under weather stripping).
Lots of good advice in this thread. Make a chk list from it. Take a magnet too.
Good luck!
By the way, 4 hrs is nothing to chk a #'s car, any car for that matter. Oh and him being an old guy? They can be asshole scammers too, so be careful.