[Arran]

This is rather interesting, although with the number of things you had to add to this "Kit" to bring it up to a decent standard, it's almost worth just buying the parts and going with your own design. Mid air solder joints is a crappy way to construct a point to point wired chassis, I can't believe that they didn't include at least a 1/2 dozen terminal strips with it. Some British radio manufacturers did that and they looked like a boar's nest, and unlike in Soviet radios they were not spot welded.
  With regard to line capacitors it may or may not need them, some transformers have an electrostatic shield built in, like in RCA radios, and others like Philcos do not and need line caps. MOVs will work for surge protection, though they do have a service life and should be replaced about every five years, look up power bar fires if you want to find out why.
Regards
Arran