Hello, I'm planning to purchase a custom 6 speed, H handlebar Brompton. Should I
opt for the -12% gearing? I live in Harlem and will be riding my bike up
Amsterdam Avenue btwn W125th and W116th streets regularly. This hill seems
pretty steep to me and I would like to be able to peddle up it without killing
my knees or standing on the bike.

Thanks for your feedback,
Pascale