Oppo 105 or DAC

My 2.1 audio system consists of the Emotiva XPA-5 amp, USP-1 pre-amp, and their ERC-2 CD Player.

I have an iMac and it is not connected to my audio system yet as I am trying to figure out the best way to do it.

This system will mostly be for listening to music which comprises of iTunes, cd's, sacd's, and concerts dvd's and blue ray.

My question is if you had this system would you go ahead and purchase the Oppo 105 and use it as your DAC and disc player or would you suggest something different?