What about something like this?
My DXi650s have 180w peak with 60w continuous. I did the whole 3/4 rule thing and got 80 continuous.
My Dxi460s have 120w peak and 45 continuous. (60w continuous with the 3/4 rule)
The nominal impedence for both speaker sets is 4 ohms.
The amp has 300w x 2 channels at 4 ohms and 170w x 4 channels at 2 ohms.
Sorry, first time dealing with amps.