Update on this so far
I’ve now managed to get everything to build it.
In the end ended up with Di2 Ultegra 12 speed , Deda Superzero bars , SR9 stem , and Fizik R1 versus evo saddle. Kept it a nice but also not silly spec as you can go pretty crazy on stuff if you please. It’s actually come out less than I expected thankfully.
Part of me kinda wishes I’d gone rim brake and campy but since the amount of use it’ll get the spec I’ve gone makes more sense in the long run.
Waiting on having the frame wrapped before I’m building it up (hopefully soon as today was first day when spring felt close)