[Teazer]

Welcome Dan.
Don't take this the wrong way but different choice of suspension and wheels but apparently the same mistakes and a Sabre tank? An interesting choice. Unfortunately CX cafe racers all tend to look like they came from the same styling studio and how come I never see any of them actually being ridden? Asking for a friend.

Ask teh right questions and there's enough collective knowledge here to point you in the right direction.

 

[Teazer]

Now that is very different. There are a couple of those in classic/vintage racing in Australia.

No silly seat up in the air type frame modifications. Focus on function and not on looks.

 

[Teazer]

Good points. Many race classses restrict tire/tyre sizes to what was available or common in the era and as such skinny rubber will be the only option.

And with shaft drive, it's exponentially harder for most people to find a way to go with a wide rim and rim protector.

An a relatively light underpowered bike will not keep fat rubber up to operating temperatures.