Re: brighter tele neck pickup
+1 on 500k pots making the neck/rhythm pickup sound brighter.
The received wisdom that Tele neck pickups sound dark and dull stems from a mixture of misunderstanding and poor manufacturing practices during the CBS era.
As you probably know, on older Teles, the three-way selector switch offered Bridge PU only, Neck PU only, Neck PU only through a pre-set capacitor/resistor tone network. This last option appeared on the switch where most guitarists would have expected to find the plain Neck PU sound. Some of them must have believed that the Bass Tone pre-set WAS the Neck PU sound. That is how myths get started.
On some CBS-era Telecasters, the pickups are just plain plop.
Finally, for a time, Fender saw fit to employ 1megOhm pots. In my opinion, the resistance taper on these just doesn't suit Teles. (Strangely, on a Fender Jaguar, anything BUT 1meg pots seem wrong.)