Responses from mtbrider

Simple copper speaker terminal jumpers? Lost my originals.
How about these: 
Where To Buy Cable Elevators/Risers?
These are cheap and work well. 
Don Sach's pre amp
You might want to read the threads in the Tube-o-Phile circle on the audiocircle site. 
Chromecast Audio would work with a cheap rca splitter cable. 
Which Budget Friendly Floorstanders Next?
+1 on the Sierra 2's! 
ascend sierra tower with raal or Focal Aria 936
I don't have the towers, but I do have the Sierra 2's. I find them very non-fatiguing. The RAAL tweeter is excellent. 
Need FLEXIBLE Power Cord .
Triode Wire Labs 
Recommedations for bestt interconnects for phono cable inputs at $100 or less
Audio Sensibility Impact SE comes in regular RCA and dedicated phono configurations and both are loosely in your price range.  
Comparing these CD players with my gear...
+1 on the Marantz SA8005. 
Bookshelf Speaker Recommendations
If you're leaning toward the Ascend Sierra 2, that's a good direction to lean! I've been very happy with mine. 
Tube upgrade for Unison Research unico
I've used NOS Brimar 13D5 and CBS/Hytron 5814A and enjoyed the sound, but they're expensive and were not long lasting. I've found the reissue Tung-Sol 12AU7W/6189 tubes from Cryoset sound good, are affordable, and last a long time. 
Any input on A+T PA 2500R integrated VS. Ayre or Pass Labs INT 60?
I believe the OP means T+A PA 2500R. 
What speaker cables can complete with Audience 24e or 24e SE for less $$
There are numerous threads on here attesting to the quality of Clear Day speaker cables and to the ease of working with the owner. They have the smaller size factor you seek.  
Entry Level Interconnect Reccomendations
I'd recommend Audio Sensibility cables....whichever offering fits your budget. 
Rogue RP-1 pre-amp. Just another SS pre-amp, or high end caliber??
If it fits your budget, Audio Advisor has the Parasound P7 on sale for $1699. Balanced in and out, MM/MC phono, headphone amp.