Thanks for your comments. I think the "management on board" issue should be fairly okay, as (dare I be this cynical!!!) there's money to be made by training people in online moderation!!!
Re: single approach, you may have a point - I'll try to incorporate a variety of different approaches and techniques, and just hope that I don't "fall between 2 stools"!
I've really not had much luck finding any apps to offer "pre-coursework & post-coursework" test comparisons, so if anyone does know of any, please let me know ...
All the best,