Shaving down there, not up here

Not too sure if this is the place to ask, but here goes nothing. I want to shave my pubes, and make it nice and smooth (I enjoy when its clean, so does my wife). I got a new razor that shaves just the way I like it, but realized I don't know how much to shave to make it look nice still. Like, my wife likes chest hair, so I don't want to shave too much and make it all weird? idk