I recently obtained a Bianchi bicycle from my grandfather, who won it it a raffle 20 years ago. He doesn't ride, never rode this bike, so its in really good condition. I put on new bar tape, adjusted the shifters (suntours-old but good quality, it seems) and the bike rides pretty nice. I've started riding it a lot though, and i was wondering if there was anyway i could lighten my bike by about 3-5 pounds relativly cheaply (under $400). Also:
-Are clipless pedals worth the trouble and (possible) danger?
-Is there a way to move my shifters from the stem to the downtube?
-are carbon forks worth it?

thanks