Yea I'd grab two aq 90x4 and bridging the second for the rockfords. Or I have a mtx amp that does a bit more power thunder 7804 120x4@4 250x4@2 400x2@4 900x2@2 in decent shapeJust noticed you said you needed a mono for the midbass. Definitely don't do that, midbass is stereo. It will sound all jacked up running with stereo components as part of your front stage