Hi from South Africa. My wife road my e-bike the other day and of course loved it. I know have the challenge of converting her MTB to to an e-bike. Reason for conversion is her MTB is very sturdy, new and not worth selling. It will definitely handle the additional stress/ load. I have done a little research and be feel the mid drive kit will most probably be our best bet?. Rear drive is also a possibility. Would also like to keep the cost down, being from South Africa limited products are available. Am thinking a 750w motor with a 20amp battery with at least four pedal assistance settings and a throttle so she can also ride out of pedal assist mode. Looking for the best kit for the best price, the challenge will be trying to get the kit to South Africa