wish you well .My first time with disc brakes, tuning a pain, never done owt like hydraulics ,good reports on the bb7 so worth a squeeze on the shelf ,its a day 1 20 so nexus 8 as I am used to ,don't use dynamo any more move lights from bike to bike and no drag but willing to live and learn
I managed to bag a good price in Di2 hydraulic brakes setup, which i use on other bikes. The difference was night and day instantly. Ive been using hydraulic disc brakes for over 8 years, I would never get a bike with rim brakes