Glad to hear you like the 105MM Micro Nikkor. That is one I'm looking at. I need a decent flash and a Micro lens. The 18-55 can focus pretty close, about 8-9" and is "near" macro but it isn't really a macro lens. I had a pretty sweet Nikor Nikor Micro lens back in the 80s (pretty sure it was about 100MM and somewhere around F2.8 or so, maybe even faster, had a huge piece of glass in the front) but sold it a long time ago fo fund some other projects.
Here are close focus shots of a Hi-Viz Rusty Spinner using my 24-85mm at the 85 mm end and the 105 mm Micro Nikkor. Both were shot using the on-camera flash at f16. The only issue I have with the 105 is that at close focus, it has a tendency to hunt. It's a little annoying, but you can fix that by using the AF Lock or by going to manual focus.
Let me know what you think.
......because the voices in my head tell me to.”