New thread, definitely. This one was for the one specific issue.
Also, no one needs a long rambling set of posts and responses along the way as you pursue this worthy goal. (Almost) All the things you'll note have already been found, discussed, and resolved (or determined to be unsolvable) by others. So the value-add of your effort would be in bringing all that information together in one place.
When you get finished, a single consolidated document, maybe uploaded to the Nexus Dragon Age Wiki, would be excellent.
You then could post a link to it here in the forums.