new flywheel

i heard that a flywheel lighter than 12lbs is not good for the street i wanted to know if this is true. i want to install a exedy stage1 clutch with a new fidanza flywheel. i need you guys helps because i dont want to spend all this money and have something go wrong later

i also wanted to know if a 97 prelude gauge cluster would work in a 94 accord

can some1 answer my question