Legacy Speaker Owners Assistance Request

Moving on from my 2 yr old system and looking heavily @ Legacy speakers.

Looking for suggestions for:
Whisper XD amps
Focus SE amps
Marquis HD amps.
I understand that the XD/SE are completely different for amplification requirements.

Room size is med-large: 10,800 cu ft (36 ft/dia -circular) w/ high ceilings.

So higher power likely requires for mod-high SPL.

Thanks so much for any assistance!

Regards
T