I have the cassette, chain, and saddle already. Staying SRAM 1x11 with hydraulic disc brakes. Going tubeless. Wheels are already pretty light but I actually need a 12x100 front hub so I might go with something other than the Tune hub unless I can get a different fork.
Here's a snapshot of the build spreadsheet.

I'm open to suggestions for other ways to save weight without sacrificing too much strength. I weigh 185 lbs and carry a single water bottle usually.