I have mixed feelings about this. One the one hand I admire the willingness to give it a go, and he seems to have done a lot already. But, I don't like the position of the battery pack. It puts a lot of weight relatively high and far back. I'd want to stack most of the batteries behind the seats, but I can see it would be more challenging to split the pack into two or three blocks. I can appreciate the need to keep it simple in order to get it finished.
He managed to irritate me by saying the engine was in poor shape and claiming that it is very hard to get parts. I think we all know that it is far, far easier to get parts for the Renault engines than it is to plan and execute an EV conversion. The engine looked dirty, but is it in poor shape? How does he know? He obviously just wanted to do an EV conversion.
He did somewhat address the total mass question by stating that he has six battery modules at 55lbs each. So 330lbs of batteries, which doesn't sound unreasonable if the weight is low and centralized.