DAC upgrade

Buy the Dave upscaller with very good digital cables much more natural sounding.

Grimm MU2 now

Grimm Audio LS1c active loudspeaker system later.

Too many respected audiophiles and reviewers hyping it to ignore if you got the money and if you need an Occam's razor setup.

Unrelated to your original query. Have you invested time and effort into room treatment to support your stellar gear?

Thank you all so much. I was looking into adding the Modwright into the mix. 
As for room treatments, short answer is yes. With an asterisk. Had some in the original room. The new room is currently being built (old garage getting converted to livable space). Putting some treatments in the walls (decoupling the drywall from the framing) and working with GIK to add in treatment around the room. It’s still in progress. 

OP:   Very nice set-up.   When the room is finished, it would be fun to see photos posted to your Virtual System page.

Apologies for this off-topic note.  You have a lot invested in quality cabling.  When I read this review, I purchased this cable.*   It's unlike any digital cable that I auditioned previously.   Perhaps, give one a try,  Most dealers offer a free-trial period. 

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* Now I have a full loom of the SR - upper-tier.