Please advise why the need for 105mm.
You get the extra 55-105mm reach, for a nominal sum. I like the feel of the 18-105mm also, seems like more solid. Maybe it's because I don't like the in-out-in zooming of the 18-55mm also.
Further to that (functions you may not need), I am sharing filters with my other Nikon lens, 77mm and the stepdown ring 67-77mm filter doesn't make the front like one big mushroom otherwise.