What kind of amps are around you? Most people around here know the difference between RMS and max power. I have a rockford P1000 - 1bd and I am getting 1000rms out of it. Like wise I have been looking at the AQ 2200 and from there specs and the warm welcome AQ has received why would me or the OP spend more money on a bigger amp that we don't need? Headroom is ok but IMO there isn't a need for more than the AQ2200 puts out and are going to upgrade again a month after getting it.
I will speak for myself and in my wallet I would be happy with the AQ2200 at say $400 for up to 2200 rms than to buy a AQ3500 at $750 just for the headroom.