Yeh, your speakers are tough to drive. However, I'd take 60 watt pass labs over 300 watt adcoms any day of the week. You may not get as much volume but you will get tighter bass and clearer highs.
I do not like to mix amps when bi-amping (personal preference). You will be best served to try different amps for their sound first. Once you find the sound you like, then worry about the power. You can always bi-amp then.
I do not like to mix amps when bi-amping (personal preference). You will be best served to try different amps for their sound first. Once you find the sound you like, then worry about the power. You can always bi-amp then.