Thanks for all the comments guys. My HT room was actually smaller,12x15x10 initially, but some suggestions made to me by other board members made me ask my wife - who is in the construction field- to make it a bit larger. Thus the new size.
When I made the room larger I moved from the PB12's to the ultras as this would not break my budget. I was going to get the Aperion Verus Grand Towers, but also made a change and will try out the new Ascend Sierra Towers along with the matching Center channel.
I don't think I will ever get this chance in my lifetime again to build a new home and have 15k to spend on HT so I want to do it right. Thus my question if 9.2 is worth it.
From the answers, it would appear not. So here is a list of the things I will get for the HT room.
Marantz SR6006 or Yamaha RXA 1010
GIK Acoustic Panels
Ascend Sierra Towers and Center
Ascend CMT 340 for and L&R Rear
HTM 200 for L&R Surround
Samsung PN64D8000
2 SVS Ultras 2
Oppo BDP-93 ( used for cd player as well)
Emotiva XPA3
Any suggestions that you would like to make will be well appreciated as it never hurts to make a better choice.