I havnt read beyond the first few posts (will read all if I have time), but I need to point out that the vast majority of historians, archaeologists, and scholars believed David to have actually existed BEFORE the discovery at Dan in 1993. (I have read endless books from all the leading experts in the field plus have lots of journals)
It is commonly stated claim that most felt David was un-historical before the discovery in Tel Dan.Not true.
There was (and still are) a vocal group of scholars who were among leaders in their scholarly field who questioned the accuracy of Iron Age related events described in the Bible-and mainly publish in scholarly journals like Journal For The Study Of The Old Testament & Scandinavian Journal of the Old testament-but they were never a majority.
Even leading historians closely associated with these "minimilastic" views, like Gosta Ahlstrom, believed David and Solomon to be historical.See his massive 990 page book History of Ancient Palestine(1993).
That was before the Tel Dan discovery.
Since its discovery, actually most evidence (archaeological) has done more to disprove the United Monarchy claims of the Bible than enhance it.
And there are some alternative non-majority views of the Tel Dan discovery which question conclusions reached from it.
See the book Jerusalem in History and Tradition (2003) by Thomas Thompson and check out roughly pages 46-67 by Niels Peter lemche for a brief outline of disputed issues.The book is expensive to buy, but the library loan program will enable people to read it for free.
The Tel Dan discovery didnt really add anything truely revolutionary to the discussion, even if the widely held conclusions on it are accurate.In no way, shape, or form does it prove the United Monarchy.I remind people the Israel Finkelstein never questioned the existence of David infact believes he existed.Davids existence isnt so startling.
The Tel Dan discovery is over-rated.It adds something to our knowledge of ancient Israel and Judah, but didnt really over-turn established opinion.