I would have a look at: https://roadmeister.cc/. Complete report on building his Velobuild bike, and includes his shopping list.

Few questions from my side:

1. Considered tubeless? I'm planning to go for the pro-one TLE from Schwalbe.

2. I would add foam liners to prevent rattling from the brake lines

3. I think you will need an adapter (FM 160>140) to fit the 140mm disc

4. Make sure to match mounting system of the discs to the rims (either centerlock or 6 bolt)

5. Bottle cages, rim tape, bar tape, tubeless valves ...

6. Start looking for the rival set soon, as all the Sram parts are really hard to find.

And finally, why not build it yourself, really great to do and will make maintenance a lot easier!

Thanks! 400mm x 90mm bars

Someone on this forum pointed out that the bars seem to flare up quite a bit extending the reach more than they expected. I ordered a shorter stem length anyway without knowing this and have been happy with the fit. Bars have been pretty stiff so far and not terrible to wire internally.

Chris sent me photos the other day, and they got nearly all of it wrong... The decals were were rotated 90-deg, and they didn't seem to get the right colors in the right place... I'm waiting to hear back on their ability to fix the mistakes, but I'm not impressed so far... at all.