This isn't a very drifting-friendly site. It's just more geared towards on road racing and off road. Try Drccentral.com- that is a website geared towards drifting. EDIT: I'm only saying that because you'd get more responses. People here will definitely help, but I am just trying to point you in a better direction.
You need a sensored brushless system if you are doing drifting or on-road racing. I would go with one of the Novak havoc kits. They are sensored, cheap, reliable, have a kv rating in the exact range you want, etc.