I worry about having them damaged though by curious crowds. Venue size is on the small side, about 2500 sf, but that may change. Are the new Bryston speakers suitable for a public venue, where hopefully there will be large crowds. There are dealers that provide commercial systems but I’d like to hear thoughts from this Bryston neighbourhood.
That is a very large space to try and push hifi speakers. Honestly, stick with the pro PA cabinets and get big subs while you're at it. As a guy who's set up sound for a couple different venues like dance studios, yoga studios, and restaurants/lounges/etc, the equipment is going to get beat up, drinks spilled on, knocked onto the floor, etc. You need stuff that can take a beating and get loud/project the length of the room. If you're gonna have a full club, all those bodies absorbs a lot of sound. You need to raise the speakers high enough so it will reach the back of the room unless you're doing a distributed speaker thing around the perimeter (forget about time coherence in that case, it simply isn't possible). If you're gonna host live music/rent out for events or parties/etc, then you'll definitely need subs that can shake the building a moderate amount. Further to the hosting/live music thing, have you considered adding a large mixer? stage monitors? for that matter do you have a stage planned? Do you have the space to put in line arrays? that would help with the projection to the back of the room.
I keep saying the word "loud", but that can be a bit of a misnomer. Think of it in terms of energy. To fill the space with sound you need to fill it with energy. The bigger the space, the more energy you need. "Loudness" is simply a byproduct of that energy. You also have to consider that if you want the sound to be heard at the back, it is going to necessarily be much louder up front near the speakers. This is why in typical large venues they are high ceiling with the speaker hung up high, so then the distance to the front and back of the room aren't that different. And if you look at vertical line arrays that make that funny "J" shape, the bottom speakers projecting down are actually softer than the top ones projecting to the rear.
Anyhow, that's a dump of more questions than answers.