I know this is an older post but:
Gel filled is not fun. I've heard (but haven't tried) baby powder helps with the fan-out kit. Still takes a lot of cleaning.

About length/bandwith:
for 62.5 MM is good for about 2KM at 100mb
SM goes to about 30Km
For gigabit:
220 meters over 62.5 m fiber and
550 meters over 50 m fiber

Bandwidth of fiber is MHz per kilometer. As the length of fiber increases the bandwidth decreases proportionally.

Short cable=higher bandwith

50 m cable offers about 3x bandwidth of 62.5