Simply the fact that you're second guessing the project is a good indication that these kinds of jobs are not for the faint of heart and a positive outcome isn't guaranteed after all of that work.
I know there's a lot of animosity toward ebikes but I have several friends who are very accomplished riders (Cat 1 racers, MTB racers, rando's etc) who put in lots of miles of training and then use their ebike to get around for trips of less than 20miles. Are you considering one with a motor in the wheel or built into the frame (pinion?). post up pictures when you get started!
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