You can get a whole norton set 220/1000 and a 4/8k and a lapping plate for just a little more than the price you show for just the 4/8k stone. Well under your price range.

You could get by with just a yellow coticule, there are a few here who go from bevel setting to shaving on just that stone. You could also add the CH12K to the end of the nortons as well.

The only DMT I have used is the 8XX that I use to lap, but from what ive read around here, DMTs are a good choice if you want speed and no maintainence, not so much if you want feedback.

Sorry I couldnt be more specific and tell you ive used them all, but there are a few around here who have. Wait for their advice.