My niche is 37mm tyres and guards but flexible on the tubing.
Is 128reynolds and 2mm more tyre width worth the money for you to go custom over the spa mono? Similarly, why don't I just buy a Surly cross check? I think I baulked at the seat tube angle geometry for some reason.
I'd love something that was 853, 30c tyres with guards, but it's quite niche really so it's a custom job.