All Road Custom Steel (DK -> UK)

I am moving to the UK around august 1st. This means I have to give up my workshop and therefore also frame building (I will keep all my tools in storage).
Good thing about this is that it gives me an excellent excuse for building myself another frame.
I have long wanted to exchange my current road frame for something that takes slightly bigger tyres.

Ever since seeing this actually:

My current way of road riding is between 50-150kms, with as much gravel as I can get. So the bike I am building won't be a precious art piece, it will be a tool!

Specs:

• 28c ish tyres (thinking about buying Open Paves, Paris Roubaix or Strade Bianchas)
  
• Eyelets for rear fender (as I am thinking about joing a club so I will have someone to ride with)
  
• ø44mm head tube
  
• Columbus Fel forks
  
• Shimano 105 5800 groupset (BSA, 175mm, 53/39T, 11/28T, black)
  
• Undecided on wheelset, but probably 105/A23/Comp
  
• 3T kit as I have it already (Doric Pro, Team Arx, Ergonova Pro)
  
• Hope headset
  
  

I already have a disc brake tourer/cx/gravelgrinder thingy, so this has to be faster and lighter.

As for tubing I went with:

• ø44mm x 220mm machined head tube
  
• ø35mm Zona DT
  
• ø31.7mm Zona TT
  
• ø28.6/29.8mm ex. butt. ST
  
• Zona MTB S bend chain stays
  
• Spirit straight seat stays.
  
  

Dropouts will be breezer style dropouts like these

Still have to decide whether I want internal or external rear brake cable routing. I have bought the stainless tubing to do this, but as I have never done it before I am not sure if I will be satisfied with the end result. Also external routing is much easier to do, easier to maintain and is much more the design philosophy I normally preach. ;-)

I am not completely sure what geometry I want. Most of it is decided, but not sure to go for 74 degrees og 73.5 degrees HT.