I would take the flight and give the car a good test drive. Compression numbers look good, and #1 may come into spec after a good drive. If it doesn't smoke except for a bit at start up and runs nicely through the rpm range you should be able to enjoy driving it for some time before a tear down. The bottom end of these engines are solid. You don't say what you are paying for the car or the condition of the body and suspension, so there is no way to guess if the price is fair.
To respond to wolds, you are correct, worn valve guides won't directly show up in a leak down test. I was saying that oil leaking past a valve guide could cause carbon build up on the valve keeping it from seating. That is why I suggested taking the car for a good drive ( Italian tune up) and rechecking the cylinder to see if the leak down improves. It would be nice to know how much oil the car uses in 1,000 miles, but it seems the current owner does not drive it enough to determine.
Just curious, how much mileage on the clutch. It will also play a part in whether an engine and transmission drop are in the near future.
I purchased a used '86 engine and transmission with a stated but not confirmed mileage around 75,000. Here are the pictures after disassembly. You can see what a valve guide leak looks like. This is one of the reasons I like to see the spark plug condition so you can get an idea of what is going on inside. Dropping the exhaust and taking a look into the exhaust port will also show a lot.
If I were having a PPI done, I would want to include removing the valve covers and checking the cam lobes for wear and pitting, and checking for broken head studs.
If you have the ability to work on the engine yourself can cut down on costs. To give you an idea, I was charged $680.00 labor for installing new valve guides, a multi angle valve job, and having the Nikasil cylinders cleaned and prepped for new rings. If it has the KS Alusil cylinders, things could be different. I did all the work disassembling and assembling the engine itself. Add in 6 new exhaust valves, 12 new valve guides, rings, gasket set, sealants, etc. for another $700. Throw in a couple hundred for the special tools. My engine ran like new when I finished.