Your thoughts on this engine (photos included)

It looks well cared for. The most expensive thing that I can see is the possible leak at the radiator neck. If the problem can be solved by installing a different radiator cap, it's a cheap fix. A replacement radiator, unless you want numbers matching NOS stock, is not too bad.

The EGR valve is a cheap fix. Replace it.

The oil leaks are gasket issues. The gaskets are not expensive. It may run into money for the front cover gasket if you have to pay someone else to replace it.