Not sure if the OP is still considering an Alfine 11, but I would advise anyone who is to check the ratios are suitable for their use.
Lots of stories online about first being not low enough for stiff climbs on a loaded tourer.
I have an Alfine 11 on my Rose/Bosch ebike.
You need some cadence from the system to draw the grunt out of the motor.
First, when spinning, equates to about 7mph, which is certainly no granny climbing gear.
It's possible to lower the gearing using a smaller chain ring or larger rear sprocket.
But some owners who have done that find top gear - 11th - is then too low.
My mate Vince, who is a trained bike mechanic and a keenish touring cyclist, had several goes at tinkering with the gearing on his Alfine.
He couldn't get it right, so has given up on the Alfine and gone back to derailleurs.