Would look at what tires your local conditions need first over attempting to get lighter ones, tubeless is an option if you are looking to reduce weight, the current trend (justified) is for lager volume tires over weight, for better grip / control.

For the bike as is currently, the crank looks to be a big one, you have listed it as a Shimano Mega Drive, you need to confirm what it really is, as have never heard of that model from Shimano, next, would look at the seat post, just because it's carbon, doesn't mean it's light, and while your there, the saddle angle looks to be a long way off.

May be worth weighing the cassette as no-name / cheap ones can be very heavy, for the wheels, as noted above, you can get lighter, but this will involve a large expenditure, crossrides are nice for the money.