I'm currently accumulating parts for a city bike for a friend. It'll be built around a Motobecane mixte (120mm spacing). I'm planning to set it up with a 5sp freewheel and a single chainring around 44t (1x5). With 700c x 32mm tires she'll have a range of approximately 42 to 85 gear inches and a very comfortable cruising gear of 70 gear inches (44x17). I'm setting it up with a long cage Suntour RD and single barcon.