With peace and love Kai you gotta stop offering your stuff to people in another continent 
Well, unless the person actually wants a custom skinned deck. Anyway…
I would recommend the Omakase if you want a nice fiberglass enclosure from Ben in the UK:
Fits a 12s3p with 21700 cells.
Alternatively Eboosted makes an enclosure for the Coyote that can fit 12s4p:
Personally I have a Coyote with 184mm Boardnamics trucks and a single hub motor and I love it. Above 40km/h it gets scary though. Definitely gonna eat shit on it one day.
What are your goals for the board? What range do you need, how fast do you want to go? I guess since you’re from Sweden your roads will be smooth enough for a urethane build 