Im not entirely certain about the Ek3 hatches because they really are quite rare, most civic hatches of any type in the country have been used to make competition cars, however i suppose there are a few around... RacersEdge might be able to help you track one down.
Generally EK 4 door's retail from 1.3 mill for an early car upto around 1.8 or maybe higher for a late/high spec car such as the ViRS. There is no real reason that hatches should cost more, but this being SL, you never know what a seller might quote!
As for point no 3, The EP82 starlet GT was manufactured up until December 1995, after which it was replaced by the EP90 Glanza V.... Incidentally, there is no reason to be afraid of buying a well looked after EP82 (assuming you can find one), because they are quite solid machines, and will be far more fun than a non RS Ek civic...
I feel I should point out here that beyond these three, there are a range of more interesting choices you can find for your budget, if you want to be a bit different from the herd.