One thing about restoring the rickshaw. I think some of the Patina in the internet photo gives it some of it's Old Asian charm.
Make it look like a new bike, and you lose that charm.
Of course, if @
game_player_s's bike is in much worse condition, then it may still need restoration, even if the goal is to end up with something that looks like a tired used bike.
Any photos of the actual bike? What did the seller say?
Still, there is nothing wrong with rebuilding the bike to suit your needs... especially if you don't do anything that can't be reversed. Cargo box? IGH? Anything to entice customers if you should choose to try a pedicab service at events?
If you are hoping to get customers, anything to make your pedicab stand out (thus the patina), while still making customers feel safe and comfortable, and enticing?
Something for the kids to play around with?
Pet carrier?