You are getting WAY beyond my skill level.
One thing I am doing with this project is just keeping it real simple.
You CAN build a car that can go over 100 miles in a day, it's just not part of my plan. You start to need a lot of batteries, higher voltage, etc.
Take a look through the
EV Album and see what you find in there for higher range vehicles.
That's how I built my electric motorcycle - just looked at what other people had done, and what parts they used, then built something similar.