You are going to hate me for being the MoPO (Master of Painfully Obvious) in the crowd, but I am not going to suggest you get a new flat!
I notice that your current setup seems to have a 2nd monitor [24"?] to the right of the right Elac.
Voila! You just found more room than you are showing us... which expands the possibilities
At worst you can get a single - but a larger - monitor to replace current two.
Then, you may possibly be able to upright the Elacs properly, where your tweeters level-ish w/your ears. Probably at about your "eye-level" at the center of new monitor.
This will allow the
placement of the Elacs on sides of monitor which will
locate them to get better stereo/center effect.