Sure, it's overkill. So what? Looks good, hauls the kiddo, and apparently the wheelset was just hanging around waiting for a job to do. Sounds like an all-around win.
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera