I know you love high voltage, but remember that excessive fast charging is not good for Leaf batteries. Nissan recommends 240V.
This guy's down to 35 miles of range.
https://www.google.com/amp/s/insidee...l-battery/amp/
And another thing to consider is that Nissan 'recommends' changing the brake fluid every year. I'm going to try to do it every 3. Upgrading to DOT4 is a nice, simple mod.