Perplexy, unless I missed it, you have not mentioned the size of this space. Early in this thread, I recommended what many people here are stating....pro powered speakers. Very reasonable, and can do a good job. I own Lascalas, have used Lascalas, on stages, in gyms, in auditoriums, etc, and yes, they would work very well, but would need additional bass reinforcement ( sub woofer augmentation ). Room layout and usage would determine how many of each you would need. If it were me, I would consider spending more, to achieve a nicer, cleaner and smoother sound, that would also reproduce jazz and classical, as with such a huge space, why not ? But, that is me, and I feel a great system, particularly speakers ( I do enjoy my Lascalas ), should be able to play ANY type of music, and at ANY reasonable volume level ( what is reasonable, lol ). Four Lascalas, additional subwoofers ( at least two, likely powered ) and the associated equipment, will likely exceed your current maximum budget. However, take your time, as it can be complicated, or, quite simple, which ever way you go. Increasing your budget, might allow you to hire a professional, to help with your design, and, installation.....Enjoy ! MrD.....