First things first. Woofer size has nothing to do with it's sound characteristics. It is the design of the woofer that determines this. A 12inch cone can move more air (all else equal) thusly create more bass. With it's larger cone, it can produce the same amount of bass as a 10inch driver (again, all equal) with less stress. Thusly, all equal, a 12inch woofer will actually have more headroom, and operate under less extreme conditions (unless you have an undersized woofer for your room).
Second, have you heard all the aforementioned speakers and subwoofers? Going on someone else's word is a great thing to do for a friend you will see every day to be polite. But if they don't know what they're talking about, they could lead you into something very bad. Klipsch speakers are known for a brighter treble response, and to some with sensitive ears, they can be harsh. You may not see this right away if you think you're trusting an expert (which I have deduced that they aren't, given the subwoofer misconception). If you have heard them and enjoy they're sound (please listen for a long time, don't be hasty) be all means pick them up. Keep your mind open though, and never dismiss speakers on first impressions or poor advice. Audition/study, then buy. ALWAYS.
Little insert: I didn't see the part about the employee... still think more auditioning is in order.
Lastly, why Klipsch subwoofers? While they aren't bad, there is other subwoofer companies out there can offer more subwoofer for the money. If you are going after a certain look, fair enough, but for the same price you could easily have 2 to 4 times MORE subwoofer.
HTH, and good luck with your never ending addiction.
SheepStar