On my CX bike I'm currently running Ultegra 6700 2x10 with 50/34 and 11-28. I like the fact that it's bombproof and can take some abuse - getting snagged in brambles and down narrow wheel ruts etc. The rear mech is short cage 6700 so max capacity is 30t officially. I'm finding the 34x28 ok offroad but a lot of my riding is on a chalk & flint downs escarpment with short (250ft high) but steep (20-30%) climbs and currently when getting out of the saddle I lose traction on the rear wheel over loose surfaces. i'd like to run a 1:1 ratio to spin up them a bit easier while keeping weight over the rear wheel.... so something like a 34 rear cassette is required and I'm also toying with going 1x11, but the Force1 groupset is £700 over here and no availability, so I found a cheap XT M8000 drivetrain upgrade kit with rear mech, cassette, rapidfire trigger shift https://www.bike-components.de/de/Shima ... it-p49644/
Now, apart from looking a bit messy with the trigger shift under the drop bars, is there any reason why not? The MTB cassette should fit my Fulcrum Racing 5 DB wheels with a 1.85mm spacer, I also frequently use the tops over rough ground and being able to shift from there does have an appeal, as does braking without the whole shift lever moving inwards, which can easily happen on a bumpy, rutted downhill.
I'm currently running Juin Tech R1 cable / hydro brakes so will likely just need some bare drop bar brake levers such as TRP RRL or SRAM S-900?, then lastly I'd like to change over to single front chainring, any good options for Ultegra 6700? Or would it be better to replace the crank altogether?
Any advice or tips welcome. Many thanks
ETA pic of bike