Matthew, the amp noise is a minor issue. I did an apples-to-apples noise comparison with my (excellent) H694 camera. The noise from an "amp glow" section of the 1600 is shown in the top panel and that from the corner of the 694 in the bottom panel of
http://www.astrobin.com/full/253351/...d=Noneattached . The amp glow+read noise in the worst area of the 1600 is lower than the dark current+read noise in the best region of the H694. These are 5 minute darks with bias subtracted, so what you see is the dark current+read noise. The two images have been scaled so that the degree of stretching extends over the same range in photo-electrons. Although the amp glow in the 1600 looks fairly bad by itself, it is actually miniscule when compared to other very good cameras and easily handled with flat calibration.
As to whether it would suit you, maybe as a 4mp @7.6micron chip with software binning on your 9.25 it would be a good match - take Colin's advice though, the pixels are too small without binning. The chip is just small enough to use 1.25 filters as well, which is a bonus. It is a bit different to use though - more parameters than you need to set on other cameras and the USB implementation is not as bulletproof as it might be. Overall though, it is an impressive camera, regardless of price.