I just built my Omnium with 32 / 11-28 (10 speed) and it seems fine for London. Traded off some low end for closer ratios because big jumps are quite unpleasant when carrying weight.
I would prob braze the bits for the FD though to keep options open. If I ever want to venture further afield I will have to add quite a lot of ugly things to enable +1 front cog.
I just built my Omnium with 32 / 11-28 (10 speed) and it seems fine for London. Traded off some low end for closer ratios because big jumps are quite unpleasant when carrying weight.
I would prob braze the bits for the FD though to keep options open. If I ever want to venture further afield I will have to add quite a lot of ugly things to enable +1 front cog.