Bafang BBS01 conversion of modern Dutch bike

Tomfish

Just Joined
Apr 26, 2017
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Nottingham
I'm about to embark on the conversion of a modern Dutch bike (one that I don't yet own), to commute around 10 miles a day each way, as many days a week as possible.

The features of modern Dutch bikes that I appreciate are:
Hub gears
Step-through frames (convenient and anti-theft)
Low maintenance roller / drum brakes
Enclosed chaincase
Dynamo hub and lights
Upright riding position

I'm looking at Gazelle bikes. Specifically an Orange P7, or Paris P7.

Does anyone have experience of these bikes who can tell me the bottom bracket widths? I want to be sure they're compatible with a bafang conversion before buying. The Orange also has a V funky chaincase with integral tensioner, and it may be possible to fit a bafang, but equally it may not.

Just after someone with some experience of these bikes, or some photos of the bottom bracket area from different angles.