Here's a new build with a mulet with the new SRAM Red shfiters/brakes - GX Transmission derailleur - X0 Transmission cassette and chain
And the Lexon gravel bar https://www.aliexpress.com/item/1005004788375665.html which is very nice and stiff

To have a better chainline (49mm instead of the road limited to 47.5mm) I did put a non boost MTB crankset.
So there was no more rubbing of the chain.

The setup app is limited to 38T, so with this 44T I did add 6 links(inner+outer) to the 118 advised.
But had to remove one after testing.

From two other builds, for better shifting, the setup key had to be set on B even if the app was saying A.
But not on this one. So the setup app is not really accurate for mullet builds.

Edit: I forgot the wheels, these are the WR40 from lightbicycle with their carbon aero spokes + ceramic hub v2.0

Great build! What components did you use for mounting the lexon bar? Did you use the original carbonda dust cover or the one provided with the lexon gravel bar?