I got the DAV IS10 system winging its way to me and was wondering if i could boost that system by using a spare pair of Q Acoustics 1020i wall speakers instead or as well - is this a complete no-no , or might it improve things? if not can i use my proper speaker wires all set up through my roof to run the DAV IS10 system or should i stick to the fairly flimsy ones that come with the sytem? Also is it possibe to use the supplied speakers with surround sound and the QA's for stereo music? Any advice greatly appreciated