Seatpost .. Pro PLT Alloy Seat Post (Ice Grey) matches really well to the 3TTT ice grey stems and the 'decals' can easily be acetone'd off. They're not too weighty either.
Bars .. As you like anatomic the 3TTT prima bars are really light 199g or 220g area depending on which one you find.
Rims .. Have you thought about silver Archtypes as per the de rosa recently completed in current projects?