Which Speaker System ?

Well I haven't heard that particular Klipsch but, and please don't take offense, if you're only after saving bucks, you shouldn't be looking at Wilson, especially for home theater. The Watch center channel, along with matching stand, that matches the Sophia 2 retailed for over $8,000.00 and the rear speakers are $5,000.00. And that's only a 5.1 system. To go 7.1 or 11.1, you do the math. You can find them used but a Watch 2 with stand is gonna set your back the same price as the Klipsch, and that's just the center channel! The matching rears very rarely come on here used, so they are hard to find. Also, Klipsch and Wilson are two very different brands and have very different house sounds. I recommend you audition both and see what you like better. If it is the Wilson, be prepared to make a big investment, even used. Good luck to you!
Mike 

Shameless plug for something I currently have for sale but if you need to run two subs and your preamp only has output for one, then a JL Audio CR-1 crossover (along with a few others) is what you need. If you don’t have your subs already, I do highly recommend JL Audio subs. I have had and still own 2 Rel subs and an M&K sub but the JL Audio subs are better (F112v2). With the crossover, you don't have to limit your preamp search to only those with two subwoofer outputs, any preamp with one subwoofer output will work, which is the majority of them out there.