You need to build a system, not buy components. Your room can handle a bigger speaker than a stand mount. If you buy these 2 components, they'll make your current system sound broken. You won't need to use subs either. Get them maybe as a future upgrade. Also, the Vandersteen's have some unique features that helps deal with less than optimal placement.
Vandersteen Model 1
Parasound Halo Integraded amp with dac