I don't partake in the tap tone school of thought unfortunately. The Idea that you can tap a pice of wood and then change its form, attach some stuff to it, then expect it to respond to the same frequencies is lost on me. Just for fun, it rings like a bell, fwiw, I dont know what it's natural resonant frequency will be, but im sure it will be apparent when its together and playable.
Im just worried about the extra metal affecting the current in the coil. Im leaning toward some sympathetic vibrations being read by the coil creating a chorous or vocal effect. But its pure speculation.