Sat 5th April - London to Brighton 2 (Curse-free)

Last time I did ditchling it was on 48x16 and all my fixed-wheel life I have been on 46x16, recently I changed my gearing down and am slowly learning to let go.

I have just never done any type of distance in anything less than 75ish an am worried I will get left behind.

Ya, I've been trying to figure out what gearing to go with myself. Right now I have 51x19, which I believe is around 71". You guys think that will be okay? Seems like it might be too spinny for a long ride, but then again I keep hearing everybody talk about hills so...

Sorry, I don't really know the route/area so any advice would be appreciated.