Those are some great choices! Ascend offers excellent performance, and the 340 front sound stage will give you a very dynamic sound. I would however swap the sub to the Outlaw LFM-1 EX. It is currently on sale for $599 shipped, and this is a VERY good sale that ends tomorrow at midnight. This will dig deeper and have better output than the LV12R.
The X2000 is a great choice and offers up the second best version of Audyssey.
I don't see any surrounds listed, but you could pick up a pair of just about anything to use.
Denon AVR-1713 | EMP E55Ti | EMP E56Ci | EMP E5Bi | BIC F-12