While your math seems ok (the conversions make it a bit harder at this end), there is probably going to be an issue with the battery. If your local climate is on the warmer side, then the first generation battery (unless it was replaced at some point) in that Leaf will lose capacity fairly fast. (I've dubbed those batteries the "Canary Pack" because they are relatively easy to harm, especially with heat.) Unless the battery is from at least 2013, I would keep looking, especially if you want to keep the car more than a year or two, unless your local climate is on the cool side.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.