Late to the party, but yeah, Rockville is garbage, and the current gen CAB doesn't seem to be getting the love of the old 1600.1 which may have been fair.
The real issue isn't lack of power it's poor reliability, poor efficiency and little to no resale value. I'd take an 800W amp from a reputable brand before a "2000W" amp from one of those gutter brands personally particularly if we assume OP is only running factory electrical and L7 will be pushed to the absolute limits with an honest 1200W; there's just little to be gained beyond that for the risk IMO.
OP might check out theamplab.net for refurbs of good brands in that power range.