Some people like to use a pickup along with microphones for recording for a certain something, though most don't. You're not gonna find too many folks that use pickup-only for recording, which is what it sounds like you're asking about. I think for the price of the K&K and a preamp you could probably get one or two inexpensive Chinese made condenser microphones to go into your Zoom and it would sound dramatically better. Watch this video a few times to get more solid idea of a good path towards quality home acoustic guitar recording
https://youtu.be/2b6E20BwSdU