Recommendations and thoughts for end game speakers and amps

I don't think that you will get a lot more energy in the highs from the amplification.  Not sure how that DAC is.  Are you looking for an all-in-one exclusively?  Do you need internal DAC and streamer?   How big is your room.  I am thinking the Ayre AX-5 Twenty would be ideal in terms of sound profile but doesn't have the same feature set.  

Regarding cables, for value, I like Audioquest ICs (particularly water), Audioquest Robin Hood and William Tell for speaker cables and Puritan for Power though I am about to order and get demo's of Clarus.  I hear VERY good things about Clarus.  

InAkustik is my current favorite for mid-priced cables.  A pair of excellent copper speaker cables can be had for saner pricing  ($5k-$7K) and I am not sure you need silver.  

@verdantaudio 

I read here the built in streamer / DAC in the 866 is quite good for the 2k it costs and worth it so that is why I will probably get it. My room a our family room. 23x18x18 high. Open to stairs and and hallway areas and upstairs walkway. It’s treated (see my systems page). 
Thank you again to everyone the advice here has been extremely helpful in my decisions. 

@tvad Compared to $15K....$5-$7k is quite reasonable.   That being said, no dealer (I am an AQ authorised dealer) can or should post discounted pricing in a forum.  That is a violation of the MAP.  

@ronboco  If you stick with the Boulder and DAC, I tend to find silver coated copper cables to drift a little brighter.  Nordost would be a good choice.  Only thing to note is that their cables are unshielded so you need to take care not to coil it.