Found this while browsing about a moment ago, thought it might be relevant and worth checking out:
http://straightrazorpalace.com/video...ideo-lynn.html
Edit: You really don't need anything higher grit than this. I would advocate getting this and some sort of 1K hone. You can lap them on sand paper and be good for a while because that really isn't something you should need to do daily anyway. After watching that video I'm inclined to think even the 1K may be optional, but you won't regret having one I assure you. I've gotten 2 weeks of close, clean and comfortable shave off just this stone.
10K, 12K, 16K, 20K and 30K stones, Pasted strops and lapping films, Thuringians/eschers, Jnats, Zulu Greys, Apache reds, Black Gilas, Welsh slates and even PHIGs aren't necessary. They are nice, but if you can't get a good shave off the 8k you're peeing up a rope trying to hone further than that anyway. That's why I put my PHIG, Welsh Slates, and barber hones away for the passed month and focused on JUST the Norton 1/4/8k stones.
For me somehow the finisher always became the focus. Whether I was working on the 1k, 4k, or 8k my mind was really on what I was going to do different with the PHIG or the slate or the barber hone, and not on getting it right on the stone I was working on. This led to a lot of missed chips that should've been cleaned up, and finely polished bevels that weren't set. Really the focus should be first and foremost getting the bevel set. You can actually shave half decent off a 1K stone, there's a thread dedicated to that as well. I wouldn't do this again, but trying it was quite educational.