yes. don't ask a lead guy if you need lead.
you have to experiment for yourself. i say try it. personally i can't play w/ a light racquet. feels like a toy. especially nice on outstretched balls. just get the racquet on it and the ball goes over. no muscles needed.
Yonex VCore 100s - SW 351 6pts HL Tour Bite / Luxilon 4G 16 @ 51lbs