So we decided to go with the Resolve VCU for our conversion of the Jumbuck, this VCU is made by Resolve-EV in Gothenburg, Sweden.
Isak is an amazing bloke, and his technical knowledge of the concepts of electric cars is awesome, he has provided us with many long chats over email about the controller, and amazingly, it allows us to use the Nissan Leaf BMS, Inverter, and most importantly, Fast Charger.