KL-650 THX are the model to get, although they're far outside your budget. They'll outpace that little sub, so start saving for that too. This model has been on the market for years, so you may find a used set, but even there they seem to hold their value to the point of exceeding your budget. But they're really nice and would probably keep you happy for many years.
The next step down KL-525 THX is just outside of your budget at full retail price, but you could possibly find those on sale, and certainly within budget if you find them on the used market.
The
RP-160M are quite nice sounding, a bit more modest output capability, but still will bust your budget.
You might want to expand your options outside of Klipsch. Those 650's are really nice, but for that kind of dough you have other options. Subs, too, for that matter, where the Hsu, SVS, and other internet direct options will offer much greater value.