Hi, I have just bought a 40" samsung led tv + sony bdp-370 blue ray player. However my surround system is a little bit more dated - although I love it and it has performed admirably up to this point. I have KEF Q35 floor stand speakers, eltax liberty centre and old KEF speakers as rear surround. The yamaha rx-v620rds reciever i feel is brilliant but when new kit arrives in a few weeks i want it to work with new kit. Will it? or do i need to upgrade this kit as well?