Finally managed to do some work on this and now the first couple of parameters are correctly implemented (toolbar and language). I've also updated to CKEditor 3.0.2. This is available for download now.
I will try and get all the parameters done for the next release which will be in a few days or so. Once they are implemented, I just need to security test the image browser and get it working in both front and backend before I can release as an alpha. Out of interest, did you try the image browser? What did you think? Any suggestions?