Actually I don't often say they don't make them like they used to very often.
As 6Inarow said above it is your car to do as you please with.
As for the copper lines, they are not recommended for automotive use nor are they recommended for use where vibration is present.
I won't comment on the appearance of the soldered fittings. We can wait for the spectators at the rod trots to point that out their friends and make the comments. I don't think you will start a trend though.
As for the filter, Yes I do recommend running a modern high performance filter.
One of the reasons that these cars only went 35 or 4o k before a rebuild or at least a ring and valve job back when was the fact that they didn't have the best of fuel and oil filter systems.
