Speaker recommendations welcomed

Check out Audio Physic, a lesser known speaker from Europe. I have enjoyed them for the last 7 years.

I am partial to ATC as I own one. ATC are very precise and presents music as how it was recorded. with the correct power amp. it will sing. as you have stated you want front standers. the ATS scm 40 will do the job. NOW, another option is to go active rather than going separates (since you do not have an amp as of now) consider going active on the atc,  

If budget is limited, then another speaker i will recommend is the Maggie LRS +

and just supplement it with a subwoofer by REL. this combination i used to own and is very satisfying, provided your give it a 1) a large enough room 2) very good amplification,

Electronics: Really considering Michi P5 S2 and S5 amplifier for electronics, some sort of streamer as yet to be determined. I also like Coda and Pass Labs.

@hk_fan The CODA is my preference over the Mich P5 and any PASS (a bit too warm for me). The CODA #16 is great (own it), and the CODA #8 is very good (owned it). However, for $2k the Schitt Woton (own it) is a contender with the #8. I would take the Wotan over the Mich. The Woton needs a lot of break in.

Your room is a great size. Add a bit more to your speaker budget and get something you want to keep for a long time.

To save some more money get a used Sonore OpticalRendu streamer. You can get one for about $800. I have 3 of the older models and they do the job very nicely. When one of my 3 streamers die, I will look at the new $5k Lumin U2 streamer.

Lowering the price of the amp and streamer gives you more speaker $$ to work with.

I have a pair of Klipsch Heresy IVs in my second system--great speakers and easy to drive. I have them paired with a Sugden A21 class A integrated. Good luck and keep us posted.

This will be a 2nd system? Are you replacing the 1st system or is this in conjunction with the 1st system?