What you wanne look for really is that the wire is not too flimsy mainly, but that usually is no issue. So the cloth wire is great. Then just see that you do not have it unnececarily long (but not on tension either) and you are pretty much good to go.
Maybe get some silvered solder to make it easier to get those perfect connections.
For the capacitors and pots the main thing you wanne look out of is tolerance. Get that as low as you can. A 500k pot with 10% tolerance (cheap ones have that) can actually be 450ks, which is something you can notice. BKP pots for example have 550k with 5% tolerance. Same thing goes for caps.
What I would recommend is get a bunch of cheaper caps of different values and click them in via crocko clamps to find what really is the optimal value for you. Then get a better one in that value. The values can really change not just the scope and strength of the tone pot, but also the taper.
There is also the consideration of 50s wiring vs. modern wiring and when doing modern wiring treble bleed vs. no treble bleed. If you go modern and treble bleed I strongly recommend doing the same crocko clamp trials for values of the caps and/or resistors you want to use there.