I have found Thule racks to be overpriced tat over the years and now use Atera racks, mine fits my Levo Sl easily and also my Large Hello Dave which has a wheelbase of 1350mm with 2.4 tyres, and itll still go in the boot when not in use.
I must agree, in my 35 years of riding on and mostly off road I have never ever encountered a situation that required undoing a quick chain link. I can understand having to put a chain back together on a ride so carry a spare always.
Dont get anything to plug into your bike they just arent powerful enough. I run Magicshine 4000lmn on the bars and exposure 1500lmn on my bonce, both will do 1.5 hours at full chat or hours and hours on lower settings.