There are several components I want to switch out on my bike but am wondering which one should hold priority..

My bike:

Pake frame/fork
Vuelta XRP wheels
Dura-Ace crankset
No name stem
No name seat post
Filante Selle Italia saddle
Cinelli road bars
No name pedals
Soma Clips

Eventually, I wanna switch out everything but I gotta do it slowly since the most of the parts I want are very expensive. IE: A HED-3 wheel.

I was thinking about picking up a Nashbar carbon fiber fork on Friday for $90.. You think that would be a good step in the right direction?
I was either going to pick one of those up or some Cinelli drops and/or a Nitto stem.

My bike is heavy as hell and I wanna shed some weight off.

Thanks!