This is bad idea.

Though I must say, using post mount brakes with adapters on flat mount frame has no effect on braking performance. I am doing exact same thing (Deore MT510 with adapters on Salsa Journeyer) and it works without any handicap.

• They didn't include a cable stop for mechanical front derailleurs, which they later shipped and delayed my build
• The handlebar/stem was failing to secure properly to the steerer tube which caused it to loosen up while riding (Scary sh*t!). I've built quite a few bikes and I was pretty confident that this wasn't human error, I later took it to a shop and they confirmed it. It was a long back and forth with Yoeleo's customer support that took months! They kept sending small parts for me to try out like the compression plug, steerer tube adapter, and stem bolts which didn't fully fixed the issue, the handlebar still loosened up but not as frequently.
• Since they were dragging their feet and refusing to replace the handlebar I had to take the loss and bought a handlebar from a different brand. I still had to buy an ST1 stem from them (which they offered at a slight discount   ) because the integrated cabling system doesn't play nicely with anything else
• The bike works fine now which proves my point that there was an issue with that particular handlebar/stem. They still refuse to accept that.
• I also discovered that the clamp that holds the saddle together was wearing out internally; The notches that help keep the saddle from rotating had all but disappeared. I asked them to send a replacement along with the other small parts they they were sending and they told me they would but they never did. When I confronted them about it, they blatantly lied and told me that they did ship it. At this point, I just gave up...

For not much more depending on your local tax, the BXT carbon gravel frame is going for sub $400 USD right now.

https://www.aliexpress.us/item/3256804540425938.html?

and another power meter special, this time crank dual sided Magene P325 CS on Zrace arms https://www.aliexpress.com/item/1005004037853598.html

After watching the Cam Nicholls video, am I the only one who doesn't think this bike looks fast? It looks like it was designed to have the appearance of being aero from the side profile, but clearly fails in several areas. The frontal profile on the head tube and fork is super chunky compared to the Falath Pro. Everyone knows frontal area=drag. There's also a lot of weird tube profiles, the seat tube and gusset have a really square frontal profile, and the top-down cross-section of the head-tube right behind the steerer doesn't really taper, instead terminating in a chunky square flat back like on a Trek Madone. This area of the head-tube is probably the most important part to make as narrow as possible since it gets the cleanest air. But then the downtube narrows and never widens again to shield the water bottle. It's backwards of what you want, which is narrow up top and a wider, flatter back down low to shield the bottle. I just don't get it. I'm not an aerodynamics expert but this bike seems to just violate a bunch of aero principles I know of. I wouldn't be surprised if the outgoing model is faster with bottles on.

That and it's heavy. I initially saw online rumors that the frame would be ~900gr. Now 400 grams over that? Even heavier than the outgoing model? I can't see this being popular.

Well this is a bummer. Hit a pothole, shifter moved. Reset and gave it a tighten. Next time I was out, still wiggly. No matter how much I tightened, still wiggly. Then, I used my eyes and took a good hard look at the shifter, and saw my problem.

RIPieces LTWOO R9 Hydraulic shifter March 2023 - June 2023. You gave me 3 months of fairly okay shifting.

I've had my eye on the Kocevlo handlebar, only reason I haven't gotten it is because the stem is only available up to 110mm and I need 130mm. My friend has bought a set and I gotta say they're quite nice given the low price https://www.aliexpress.us/item/3256804787569282.html

Airwolf sells them up to 120mm stem: https://www.aliexpress.us/item/3256805079402621.html

Premium-tier options include Farsports F1: https://www.pandapodium.cc/product/farsports-f1-classic-handlebar/