That is a good rig actually. I'd do it different but it should work pretty nicefor full range SQL.
Those drivers are probably the same ones that I used 20 years ago. I still
have them plus more, but I just threw away the EV 18" subs as the surround
rotted over the course to time and the woofer is sorta obsolete by today's
monsters. The midranges are cool and the horn tweeters are excellent.
Essentially, all EV gear except maybe their subs are pretty good still. The
compression drivers and large horns are sweet. I have some big monsters
still operating today.
