First you should seek more informations about single bevel knives and practice on other knives before and really grasp the concepts and not screw up the ura side.
You will get many opinions, here is mine :
As for you burdget, keeping in mind you need a something to keep your stone flat I would go with a King Deluxe 1k and the JKI diamond plate. The King will have good feedback which you need and leave a nice edge, plus you will get a even/dark contrast on clad/core steel. If you're from the US you can get them at JKI. Later on you can get a coarse and a fine stone. The King Deluxe 1k doesn't deserve all the hate it gets and is used by sharpeners way more skilled that its naysayer.
The Naniwa Green Brick is slow and loads up and is far from optimal for a one stone setup and a beginner