Nice job with the new forums. I know how time consuming switching from one to another can be. We used use to phpBB a while back on CNCNZ.com. Made the BIG and much welcomed change to Invision Power Board 2.X in early 2008, now on IPB 3.X and haven't looked back.
I know you guys stated you know how phpBB works and are familiar with it, but its a shame you didn't consider Invision Power Board, it can offer and do so much more