RE: Fast charge or chademo whats available?
Kangoo is the same as the Fluence - 16a. Only the Zoe ZE offers Rapid changing, after the arrival of its 'Chameleon' changing system. As for adding seats to the van - it would also need seat belts and (probably) windows so not a DIY job. Also insurance may be an issue as you'd have to declare the modifications to each insurer.