Its totally unreasonable.
Times have changed. His problem is he wants his speakers in the band room.
If he would have small near field monitors in his control room that would be one thing.
He wants hung speakers in his band room.
He can not use domestic speakers, they are now all puny and will blow.
Pro speakers are nearly all active with electronic crossovers and amps in the speakers.
This works much better. The leader for this application is Genelec. Their lowest unit with drivers big and powerful enough for his application is 10.5 K
You might just about get away with a
couple of these, but I doubt it. It won't play that loud in his band room and you will need a sub.
Any pro speaker, and yes you need a pro speakers or you waste his money, with 12" drivers is going to be at least 10 K for two if it is any good.
The old speakers that used to be made by Altec Lansing, Electrovoice etc, that you saw in these applications years ago are long gone. Looking for old vintage speakers might be a way to stay in budget.
Pro speakers with large drivers are now a very pricey item, if you don't want them to blow the first day.
Domestic and pro speakers are now largely puny with drivers around 6". Near filed monitors in the control room rule.
Essentially you are looking for auditorium pro speakers and these days that will cost you.
For microphones, I suggest you use a spaced omni technique, that will get you a better price performance ratio and a better bass response.
These would be excellent.
Really, large diaphragm mics would be best, but that will get you into a lot more money for anything that is any good. However those Earthworks mic are very good.