I've just caught up with this post, and the website seems to have changed since early 2017 - no high power option, 30 mile range claimed. Interesting that the £1000 limit for C2W can be passed.
With some experience of winters in vehicles having feeble demisting, and with riding motorcycles, I expect this tricycle to have visibility problems in cool damp conditions. And no wipers? Rapid road-salt blindness.