Re: pickup height recommendation
No one can really tell you.
It depends on what you like, your effects, your amp, your speakers.
Just experiment with different heights and tilts until you find what seems to be the best to your ears.
Some will say that the pickup too close to the strings will produce ghosting notes or whatever but there are photos of Eddie Van Halen doing just this and having his pickup just about touching the strings with a PAF like pickup and then there are photos where he's doing the exact opposite with a hotter pickup being far away from the strings, so in others words just use your ears and forget any so called rules.