The only area of caution I would add is that the Cinema system is like most other sub/sat systems in that the satellite units do not play the full frequency range down to the most common subwoofer crossover point of 80 Hz. This leaves you with two options, put up with the resulting frequency gap or bump up the crossover frequency (provided that your receiver has a variable crossover point) which makes the subwoofer give away its location easier.

I always remember that the Cinema system cost $900, can't recall if it included the subwoofer or not. Also, might want to check on whether or not this particular system is a closeout. Nothing wrong with that, but my recollection is that Paradigm recently revamped their Cinema systems and this might be one of the discontinued models.