Should have spent less on the AVR, but that's just my opinion. You against building over time or do you want a 5.0/5.1 now?
1.2 pairs of HTD Level 2's and the Lvl 2 center puts you at $530. Minus the 10% off right now puts you at $477.
2. If you're close to a Fry's then they're always having sales on the Primus line. Good budget setup
3. Look into the Andrew Jones pioneer speakers
I'd check the classifieds here also
...that's about it for your budget
Panny 65st60 / Denon X1000 / EMP e55ti / EMP e56ci / EMP e5bi / (2) e1010i