ChefKnivesToGo has a cheap diamond lapping plate for 30 bucks. Chosera 1k for 65 on a uk site. Norton 4/8 on SRD. Nani 12k there as well. That's all you'll need for a while for around 200 bucks. If the Nani 12k is too pricey, check out the various PHIGS or an Imperia Roccia on fleabay ($30-40).
Once I learned how to get a good edge off the 8k and some CrOx laps on canvas strop, I felt proficient enough to buy the Naniwa 12k.