I'd recommend a pair of Modwright KWA-150SE amps run in bridged mono operation which delivers 650 watts @ 8 ohms. The KWA-150SE has a warm, tube-like sound and wonderful inner detail, and in bridged mono configuration, should have awesome power
Alternatively you could try bi-amping a pair of KWA's. I think this would be a great match -
ModWright Instruments | KWA 150 'Signature Edition'