I've got my guitar about as low as it can go without buzzing. However it's still high enough that when I bend upwards, the string still goes under the other strings.
Two things you might find really helpful.
A compressor. Give it a high setting with a slow attack.
A hairbraid around the neck. Stops unused strings from ringing on.

Wish I could still point you guys to the lessons section cause there were about 50 pages of stuff on tapping and quite a few had freebie MP3's on them... unfortunately the entire lessons get hidden now unless you subscribe.