which of these four amps for Wharfedale Elysian 4's?

The Yamaha A-S2200 will give you an excellent integrated. You will need only a streamer and DAC. I have used Denefrips Enya with mine and a Sonos Port, but Wiim Pro Plus or Bluesounf Node  (or any streamer) should do.

I have not heard the Ayre, but based on reputation and its ability to double ts wattage into 4 ohms, that would be my choice. It is going to be a nice system, plan for a real preamp, it is the heart of your system. 

thank you

I can likely acquire the matching preamp to those power amps listed at a later date, and in fact would like to do so

RME direct to power amp has been working out pretty well, I started doing this previously at the suggestion of a various members both here and on the RME

forums

the RME has also worked out connected to various integrated amps into their standard line level input

I would go with the Ayre,I believe it's the best out of all the amps on the list.