Congrats, Steve!
I have some questions if you don't mind (I'm just curious).
>>> Don't mind at all.
What color are your Alexias (can't tell from the photo)?
>>> Black on black (I'd even keep the covers off if the screws weren't silver, but that's Wilson's choice, and I'm not about to "paint" them).
How far away are you sitting?
>>> After setup by my dealer the current configuration is as follows:
Speakers are about 11 and 1/2 feet from my sitting position and are about 6 feet from each other (using center point of speaker as anchor of measurements). So, pretty far away. The width of the room is 12 feet so the speakers are about 3 feet from their center to the side walls. And from the rear of the room to the front of the speakers is about 6 feet.
(As an aside, if you happen to have an AES standard listening room proportion of 10x16x26, and if you believe George Cardas and his use of a Golden Cuboid (based on Fibonacci sequence, e.g. 5-8-13-21-34...), then with my ceiling height of 8 feet would suggest a location for the front of the speaker to rear wall, based on the acoustic center of the woofer panel, to be just under 5 feet. So, I'm a foot farther from the rear than indicated. The speakers are then supposed to be about 40 inches from the side wall to speaker center (I'm 3 inches closer to the wall). Given the very long room length, I believe I'm less likely to experience low frequency wave/pressure standing waves.)
The room is L-shaped with areas off to the sides with stairway and alcove and kitchen impacting bass response to one degree or another. Given the Wilson manual's recommended seating position of 1.1 to 1.25 times distance between tweeters, I'm currently far from that (it should come to a range of 79-90 inches vs. my current 136"). So, when my dealer visits next time, I think it might be advisable to play with a closer in position. However, playing by the ratio would take me closer than the Alexia's 8 foot (96") inner parameters. Too close and you cannot properly align the upper array/tweeter. So, with my current room environment, I'll live with a less than ideal soundstage. The other option is the move the speakers farther from one another (but closer to the side walls). That would likely introduce problematic side wall reflections (with only about a foot or so between the center of the speaker and each wall).
How is the bass? Did you consider moving the bookshelf with the albums to give the speakers (particularly the bass) more breathing room?
>>> Bass is really nice. Full, tight, extended, and precise, once we got both the location of speakers and sitting position set properly. Just what the doctor ordered. Seating position is all. Moving an inch or two away from the ideal and you lose or gain volume, at the expense of clear delineation of base tones and harmonics. And I've got corner traps up in 4 ceiling locations, as well as huge bass traps in two corner locations behind my sitting position of the over 35 foot room. I'll likely experiment with the big traps over time as I see what needs to be "tamed".
If anyone's got some other ideas to try, I'm game.
p.s. the Cardas pdf is here:
http://www.cardas.com/roomsetup.pdf
And if you're interested Roy Allison did a great deal of analysis nearly 2 decades ago
http://acmebass.com/archive_files/mag_articles/audio_magazine/Best Place for Your Speakers.pdf
Again, congratulations. It looks very inviting.