AC15 motor and 1238-6501 controller: $1900 and I’ll throw in one free rental of a programmer IF you even need it (2 weeks, you pay shipping to/from). It’s a well proven package that most of the online suppliers sell. Not trying to dissuade you, just be honest about what you need to get it working. I just happen to have one, slightly used for a development project that didn’t pan out. Controller is new, motor is only slightly used.
I did find a few retailers that had package deals and they had as an option a few controllers to pick from. I'd definitely take you up on that offer, but right now I'm just putting together my shopping list and hopefully in a few weeks I'll be able to buy the parts. If they're available in a few weeks, I'll surely hit you up.
I'm trying to start selling the CBR parts (engine, exhaust, radiator, etc...) on craigslist. Those funds will go to my motor setup.