System build

Hi! This is my first foray into the forum world. Please forgive my lack of tech prowess. 

I am looking to build a new system from the ground up. This system will do split time between Home Theater(7.2), and 2 channel stereo.

The listening/theater room is sealed, no windows, and is 25'×30'x9'

The one compnent(s) that is cemented are the speakers

2- klipsch cornwall IV(front L&R)

4- klipsch heresy IV (L&R rear, surround)

1-klipsch HERESY IV (center)

2- SVS SB16 ultra subs

Other equipment I am heavily leaning towards

AVR- Anthem MRX740

UDP- Reavon UBR-X200

Phono- pro-ject x2

Now to my questions:

1.) Please feel free to offer your opinion or thoughts on any of my choices.

2.) I am looking to add a 2 channel set tube amplifier around 25w. Suggestions? And can/how to incorporate it into my current system?

3.) The tale of two DACs. The Anthem has a 32bit/768khz unknown DAC, while the Reavon has a TI Burr-Brown PCM1795 DAC. Which is better, and how to I bypass Anthems DAC if the Reavon is better?

Those are my main questions. Please feel free to offer any advice. I look forward to your comments.