Interesting: If low, flip horns upside down to keep/aim 'higher' tweeters to seated ear height would definitely work, however,
you might consider turning them sideways, tweeters inside, mid horns outside to preserve height dispersion relative to any furnishings and keep the mid horn reflections higher above the floor and at same ear height as tweeters.
Keep woofers close to horns, as bass overtones become stereo, and thus you want bass emanating from ’same’ location for imaging.
Toe-In of course to preserve both equal volume dispersion (like published measurements) and avoid/minimize side wall reflections.
If listen with a friend, i.e. two chairs off center, add skid material or 3 wheels to easily alter toe-in of horn section: aim left speaker at right chair/right speaker at left chair, preserves Imaging much better than primary toe-in for single centered chair.
If possible, you could attach the two 'sideways adjacent' woofer/horns so altering toe-in moves bass with horns, important only for directional upper bass from your sub-woofer cabinets. Not too important, just a consideration.