I see a few ways for you of dropping weight, but they are quite expensive:
- Sid Fork or new Step Cast Fox (the latter from 1360g , probably some tuning would get it even lower)
- Race Face Next SL Crank (or try to hunt for TUNE/ Clavicula for even bigger weight savings)
- Switch cassette to Sram (needs xD driver) - 70g lighter
- lighter wheels: Tune as a budget option, 240s more expensive, Extralite end of the line -> could get xD driver then
- set of R1R brakes would probably be at least 50g lighter than MT4
- you can definitely get lighter seatpost (around 160g or lower) and bars (even sub 100). End of the line is Schmolke, but it costs a kidney.