Thank you RoadieMKD for reply.

I've contacted Elitewheels via Aliexpress app and they said if i use "Sellers Shiping method" (pay more 75,98€) then i will not pay VAT and also the delivery is faster. Yes, i have a discount code that will save 120$ on orders over 599$, so in total i'll pay 505,3$ for this 65mm wheelset (aniversary discont sale included).

About tires.. Rear i use 28mm tire, in front i have 25mm, continental gp5000 (not tubeless, i'll use RideNow TPU superlight innertubes). This Elite Edge rim width is 28mm, can i use my 25mm tire on this rim with no problems?

1. You plan to route 4 housings through the bars & stem using this https://jagwire.com/products/diy-cable-kits/2017road-elite-link-brake-kit? Having routed 4 VB bikes with keb-sl housing (full internal), i really dont think it's possible, so very curious to see how you manage that.

2. If i had extra spacers like that under my stem, i'd probably run an extra long plug expander to spread the forces over the widest possible area. Leverage is a thing, so if you hit a bad pothole, you're at a materially higher chance of cracking the steerer if you run tall chimneys like that. That's also going to add another sharp bend to the routing.

3. so the frame is 1060g and they advertise 950g. Did you ask if the 950 is a raw carbon weight? Primer & paint done by VB is going to add weight, idk if it adds 100g, sounds like a lot, but I'd say >50g. At which point a 50g variance is 5% of the advertised weight, i guess it's within spec? When you order rims, if it weights 460g, the seller typically says +/- 15g, and a rim is a lot less intricate than a frame.

Thoughts? Will it be possible to jam mechanical hydraulic Sensah or Ltwoo in this frame.... just a pain in the rear to route but ok after that or not possible at all.

Just about to pull the trigger on this frame or the lcr0x-d (timemachine copy) and was going to go ER9 but worried about all the issues.

i've built a VB168 with Sensah (4 hoses), the 268 is the same infrastructure, so yes you can run mechanical. It's a major, major pain though, and the FD shifting will probably suck.
I've installed 5 er9 groups, they're wonderful. The app is awesome, adjustments are much easier than mechanical (especially FD, i hate mechanical FD adjustments). Together, we've only put 3-3.5k km on them though, so they might turn to shit, although i dont see why they would.
I really liked the 168, the 268 should only be better. I would do er9 on 268 with nice wheels (not less than 500-650$ range before shipping), gp5000 tyres, and you will have a wonderful bike.
On the lcr0x-d, it's a bit old now; i wouldnt buy a bike that maxes out at 28C, and T700 is on the ghetto side now.