VERY COOL and a fantasy I've enjoyed many times.
Re: handling, if you're attached to the 10-speed, you'll get used to it. But if you're willing to change bikes, consider a beach-cruiser-type like this:
The longer wheelbase, slacker angles and heavier wheels lead to great stability, plus a cruiser just has style that an old 10-speed lacks.
Either way, keep on rockin.
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