I have used one original L1, then two of them, then one Compact, then two of them.
I was perfectly satisfied with one until I got two. Since going with two Compacts I have not seen a need for anything more. In fact I sold the other systems.
You must be careful to keep a strong enough signal to the Compacts and not OVER-e.q. them.
I have no problem with hearing mids and no problem with phase cancellation, as I have said many times before.
I would be happy to help with settings.
I have found that not much e.q. is necessary. For those addicted to the "old" standard V curve on e.q., it certainly WILL result in a lack of mids, because you are in effect boosting the lows and highs.
Start by running the sound into the Bose flat then carefully add a MINIMUM amount of e.q. if you feel it necessary. (It usually isn't!)
I have played an outdoor job with about a hundred people and still don't turn the Compacts up more than 50 percent. I will play that same job again this coming Saturday afternoon.
BTW, I routinely get more money for parties than most four-piece bands around here. I believe it is because everyone can hear the music clearly and no one is deafened by the sound.
Granted, I don't play "Dance" music for the youngsters. I do play DANCE music for adults!

DonM