Need Help Choosing A Digital Piano For Classical

[mulsiphix]

I'm hoping I can find an Upright piano in my price range. But I know this simply may not happen or I may not be able to afford a quality instrument. As a backup, I'd like to have a digital piano that I use instead. I understand that higher end digital pianos try very hard to mimic the action of a grand piano.

Given that I plan to practice classical literature music exclusively, what kinds of features do I need. Which features don't particularly matter? My price range is $1,000 with an option to add another $2,000 via debt. Any advice or feedback would be greatly appreciated .