Just curious, why don't you just strip the paint off the current one and have it reprinted?
Carbon fiber is lighted
FRP though will stil be lighter then OEM metal
With a hood you don't really have to worry about the structural integrity of FRP.
If you are going to paint the whole thing anyway then go for FRP.
But again, I have a buddy who stripped the paint of his m3 front lip back t carbon with no problem, and just re-clear coats it and it looks good as new.
Y should just have yours stripped and repainted unless I am missing something