Here is my commuter which I think is pretty similar to what you're building, personally for me I would use SS over FG, but then again I'm a old fart who started to appreciate coasting:
V. nice, pretty much my dream build, unsure I'll get there soon though (combination of funds and the bike I've bought).
With regards to SS vs FG I’ve come to the same conclusion for this build, I can go with FG on the Pearson or choose to give my knees a rest.
@pjhobs started
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Here is my commuter which I think is pretty similar to what you're building, personally for me I would use SS over FG, but then again I'm a old fart who started to appreciate coasting: