I currently have a pair of KG 5.5 and was wondering, if any, problems their might be with this type of HT setup. With the 5.5 as fronts I plan to use two RCR-3 in the ceiling, two RS-3II on the sides, one RC-3II in the center, and and RSW 12 as the sub. Can anyone see a problem because the 5.5 are so dated now???