I think the geometry would fit me. Is this frame single mould?

Hello
I want to replace my old Bianchi vertigo. Im basically looking for an affordable frame with relatively relaxed geometry, flat mount disc brakes, and clearance for minimum 30mm tires (actual measured width)
I like aero look but don't want a heavy or soft frame.
Last but not least I want a frame that is safe and with low probability for issues -like misaligned bottom bracket or brake mounts...
I have seen the hygge model s -and really like the way it looks. After reading about the hygge it doesn't seem to have a lot of problems.
It's rather lightweight and the price, including EU tax and shipping, seem competitive.
ICAN also seem like a relatively safe purchase with competitive prices including eu tax and shipping.
Tideace also offer some t1000 eps frames with reasonable eu prices.
Wouldn't a T1000 EPS frame, all else being equal, be stiffer and or stronger than a T800 frame like hygge -Or is EPS just smart marketing?
Hambini's ICAN frame was very clean. Is that normal ICAN standard or a "hambini special" ?
I would also like to know what affordable (including eu tax and shipping) brand people generally consider most likely not to come with somewhat serious issues?

Yes, mine are 30,5mm and there is enough space.

Im a bit curious what tire model+size and rim width you measured at 30,5mm?

Those tires will not be a problem

On second thought my 45x30mm wheels is probably not 21 but 23mm internal width.
But apparently gp5000 tires only inflate to nominal width when mounted on wide rims. So 28mm gp5k on 23mm rim should fit the hygge frame, Right?

I ran 28 mm GP 4 seasons but my external rim was 28 mm (or 29 mm).

Yes for 160 for the front. I didn't try for the rear.

Did you use an adapter to mount 160mm rotor in front?
I'm sorry if this a dumb question, but I never had a bike with disc brakes.
Im guessing I would need two adaptors for 160mm front and rear, but I know some frames does not have sufficient space to use 160mm adapter in the rear. So I'm a little worried if this would be an issue on the hygge frame.
I wouldn't mind 140mm rear rotor -its just that the 2x160mm is the cheapest complete di2 groupset I can find  And with the recent price increase from 1000 to 1100euro di2 already cost a bit more than I planned for my budget china build...

You can get the Shimano Ultegra Bottom Bracket for like 20$ USD on aliexpress if you want to stick with shimano everything. You will also need the tool to be able to install it to the frame. You can buy an off brand tool as it doesn't matter too much, unless you're planning to building multiple bikes, no need to splurge on an expensive one

Thank you.
Would shimano SM-BBR60 fit frame and groupset?

So I want to build a bike with hygge model s (disc) frame, 45x30mm carbon rims and shimano 105 di2.
But I know very little about cranks and bottom brackets. So I'm hoping someone could tell me what I need to purchase to fit 105 di2 on the frame?