@Matt_Geist thanks for sharing your project.
Speed has never really been a challenge for electric karts (or cars) in recent history honestly. TAG\Shifter speeds and more were surpassed some time ago. Run time (per charge) is solved too.
The biggest challenge has been controlling heat dissipation (Both batteries and motors) and (of course) weight. There was an electric class run somewhere in cali a couple of years ago, times were right there between an 80 and 125cc shifter… But keeping them cool was the challenge.
More electric topics here: #electric_karts