Afraid so, Irthos, but there's always next time!
Now, to respond to various points:
1. As far as sources, everything's negotiable. The reason I'd prefer to avoid Dragon is because many people don't have access and it may make the builds hard to understand/judge. I'd prefer to avoid Unearthed Arcana because it's all variant rules, and frequently there are differences of opinion on which ones are mutually exclusive. (I know people who see no reason not to mix the generic classes with regular base classes, for instance.) If there's something critical to the build in one of those sources, drop me a line and we can talk about it; it may be that you'll have to provide a capsule explanation of how it works.
2. Anything in the adaptation section is fine; try to stick to a deity who's reasonably close to the flavor of the class, and there should be no problems. ("Ordained Champion of Mystra," while probably yummy, contains a lot of empty carbs and MSG.)