I have a couple simple class armor set quests posted in the custom section that should work for what you want to do. Here is one:
http://www.eqemulator.net/forums/showthread.php?t=24921
It is actually written a bit crudely as it was one of my very early quest scripts, but it does work. I am sure I could write it much cleaner and more compact now, but I just haven't had the time to do it and no need to fix what isn't broken :P The best way would be using arrays. I have some scripts posted in the custom section that use arrays as well, so they might be useful for reference (which is why I posted them in the first place).