No simple answer to your first questions. To me "official" suggests sanctioned by a Group Association. To my knowledge one was never established for the 308th, at least that is what I was told at several "Flying Tigers of the 14th Air Force Association" conventions, and why some 308th vets asked me to create the Tribute website. So, might not be able to have a sanctioned, "official" website.
However, one should probably include Alan Starcher, Kerry Townsend (slimm), Jack Gross (vitaminP) and others among the 6-8 people, all connected to a veteran of the 308th (me excluded), currently collecting, consolidating and sharing 308th Bm Grp information. As you know, putting information onto a website is not particularly difficult, time consuming, by not difficult. It should be easy to present the "official" information you and those noted above have collected onto a 308th-related website. Expand yours, mine or create a new one. If being "official" is important, perhaps you should form a "308th Bomb Group family and friends Historical Society", or some such, to "sanction" a website.
In your opinion, is there enough info available to me/us to get a viable 308th BG website up and running? YES!
I sent PM with phone and email if you would like to discuss further.