Nice. I used to live in Cheshire, but only rode motorbike in the Peak District. That is not so different from my typical ride here in Switzerland. I have just over 500km on the bike now.
The consensus here on settings from the fitter riders, and ones that work for me, would be.
i) Tweak the wheel size to increase the max assist speed closer to 32kph vs 25kph (there is a thread on this). This reduces the power on/off effect on the fast flats.
ii) Acceleration set to minimum. Much smoother delivery especially technical climbs.
i) Set lowest assist for where you will spend most of your time. Somewhere between 10% and 20%. For me 10% is good for riding in mixed groups uphill; they will be puffed and you not but you still have to pedal.
ii) Set second assist for the real steep sections. 30-40% is more than enough.
iii) Set turbo as a demo mode for your buddies. 60% will still elicit a "wheeeeeee" as they disappear up the trail. Still useful for real steep sections where you dont want to work either.
For me at 95kg, 15% gives a range of about 1750vm and maybe 75km. If I go for a 90min solo blast, 40% soaks up most of the (460wh) battery in as little as 1000vm and 30km. The HT may give you more than the Fully.
To paraphrase the settings thread.
100% will add 300w to the crank for ever 100w you put in, upto the motor max of about 450w, so the motor will be working full steam once you are putting in a leisurely 150w, bye bye battery
50% will add 150w, max motor power will be delivered when you are doing 300w
20% will add 60w, but if you hit a really steep part that say requires you to momentarily do 600w, you will still get 360w from the motor.
Motor power simply affects the 450w, so 90% limits that to 405w etc
I actually monitor my crank watts going uphill or on the flat, and try and keep that above 200w at a 60-70rpm and set the gear accordingly.