I'm rocking Honda CBR coils as well. They were stupid cheap off a 2005 bike from eBay in terrific condition for $50. Can't beat that, unless like Dre says, you can find 4 stock coils laying around for coil-near-plug and can scrounge up some plug wires for cheap or re-use stock stuff. I don't see the point in bothering when the CBR stuff is so cheap.
I had to go COP though... If I didn't have to diсk around with the stock ignition, I wouldn't have. It's good enough for my power goals and more.
About the CAS... I had to swap mine for a newer (built in coil) unit to get the correct size CAS disc. This is not for AEM though. With AEM I hear you should be fine with the stock CAS. Sorry for rambling. If you have any questions, just shoot back.