As you may have read, all you really need is a Norton 4/8. I have one and also a Shapton 16k and it's all I need. Honing isn't rocket science. In my experience if you watch videos on it and read a bit, and have a light, steady patient hand you'll probably do OK. If you're just refreshing the edge, you can use only something like a Shapton 16k (it's what I use the most) or even the 8k side of the Norton 4/8.