Get it while it's hot, man. The 2000 is basically a 500 with expansion slots, so it's very compatible with OCS games, and cheaper and easier to upgrade when you do feel the need. Double-check that the battery hasn't leaked, but otherwise you shouldn't have any trouble with it. It's a bit of a hassle to set up transfer between a PC and an Amiga intially, but ADF Sender Terminal
is a good start.
And the 1084 is a fine display, perfectly suited to the Amiga's native video modes; don't bother with fancy modern displays, you'll just get crappy upscaling.