Whether you should keep the gas scooter or go with electric I think depends on

1) how much traffic (cars) are on the road that you need to travel on. Less traffic, the better.
2) how fast the cars go on that road
3) how much voltage you can get away with in your area...are cops nit picky about electric bikes in your area or not...I haven't had a problem in mine but I've read about people in NY city being stopped
4) can you take sidewalks the whole way. If you can, then that'd definitely be a huge plus in consideration
5) can you take bike lanes the whole way? That'd definitely be another positive.

Guys who own e-bikes in costa rica just put like 130v of lithium on their bike and they ride around just like a motorcycle because there are no laws on those things and the cops don't care. Ideally, you'd like to ride on a road that has very little traffic or slow streets. If you are going to super charge your e-bike with 130v, you are going to want to have good suspension and solid frame and wide balloon tires.