Mavic lead skewers are around 82g. Ti ones come in under 40g. Carbon saddles come in around 150g vs 250-300g for normal saddles. The Canyon VCLS seatposts aren't particularly light, although they are so darn comfy I'd be loath to replace them.
Biggest weight saving potential is your wheelset though. Tubular race wheels with good tubs will take nearly 500g off that bike. Then there's the chainset. After that you start getting into big money for individual components.
If you're at all thinking about aero wheels, then this is your path of least resistance. Keep the Ksyriums for training/crits. Upgrade your chainset when you decide a power meter is a must.
Biggest weight saving potential is your wheelset though. Tubular race wheels with good tubs will take nearly 500g off that bike. Then there's the chainset. After that you start getting into big money for individual components.
If you're at all thinking about aero wheels, then this is your path of least resistance. Keep the Ksyriums for training/crits. Upgrade your chainset when you decide a power meter is a must.