Fore Coot, with classical/organ music, and OHM 5000s, 250-500 juicy watts from a good Class D amp or appropriately beefy Class A/B may well add value.
My Bel Cantos I use on OHM 5s are 500w/ch of good Class D. That should do it I would think, but extra power in reserve if needed can probably not hurt, though some caution to avoid overdriving might be in order in that my 500w/ch amps seem to never break a sweat and I have never tried anything even more powerful.
I'd do the amp right first and then determine if any need for subs. With organ music, they may or may not still add something of value if set up right, depending.
My Bel Cantos I use on OHM 5s are 500w/ch of good Class D. That should do it I would think, but extra power in reserve if needed can probably not hurt, though some caution to avoid overdriving might be in order in that my 500w/ch amps seem to never break a sweat and I have never tried anything even more powerful.
I'd do the amp right first and then determine if any need for subs. With organ music, they may or may not still add something of value if set up right, depending.