I figured you didn't want to wait for it to come out.....Won't be shipping until Dec/Jan...
But yes, if you wanted to you could get the NINe.1 and that would be just about all the amp you would need for a substage if you only ever plan on running one sub...
Also, keep in mind that eD rates their amps at 12.5V, so you are looking at the 9.2 putting out a bit more than you are reading. My NINe.1 puts out about 1500 RMS, not 1200 like stated (@1 ohm that is.....)
If you are willing to wait then I would DEFINITELY tell you to get the NINe.1, though it is overkill for the 11K.....But leaves you the option of expanding if you should choose to do so in the future.....