We bought a Viking Megaquilter for under 1000 dollars, brand new, from a dealer. It was on special for 995, then we got an additional 100 dollars off for buying the demonstrator, so 895. It fits your description of what you want with the exception of dropping feed dogs, it comes with a feed dog cover instead. It has a 9 inch throat.
If you go to a dealer and see that for more than 1000 dollars, try dealing with the dealer, you can probably get it for under.