An idea would be three identical bookshelves across the front. For example, Ascend 170 SE x3 is about $525. (Or, if you perused the classifieds here, you'd have seen a couple of pairs for much less recently). Use the rest of the budget on a good entry sub, like SVS PB10 or a B stock PB 12.
Pick up some super cheapos at a garage sale for the rears. Or wait to save some more, and pick up Ascend HTM200se.
Or, to save some more, and get it all now, 5x studio monitors, like Behringer 2030p or KRK ST6s.