I'm new to the e-bike scene and bumping into questions. I've been planning and reading for a couple of months and have finally made some upgrades for comfort to my XC00. As I near in on the expensive part, the motor, I'm conflicted. I'm considering adding a 8 or 9 cog freewheel (instead of the stock 7) and wondering if I need to get the 120mm version of the BBSHD so I can shim it out for an improved driveline, or if 100mm would work. Or... does it really even matter since it'll be an e-bike and I can just use the motor for hill climbs. I'm not trying to hit 40 mph with this bike but I do want to have fun with it (ie. at least 30mph) and be able to tackle any hill I come up against (I'm in Colorado.)
I'm also considering if I should put hydraulic brakes on it as well. Stopping from 30mph with my 210lb self on it... I'd prefer as confident a brake as possible. I figure if I'm doing that, I'm looking to go with the Zoom kit on Amazon and I should probably do that before the motor so that I can get the hydraulic cut offs from the start.