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Sounds like a complete waste on a 2011. You'd be better off selling the Fat Boy (or keeping it as a second bike) and building a bike yourself with the setup you want. Or at least get something used that's much older than a 2011 and replace it. Just my opinion.
While I am all for custom work, why not buy a bike with a ton of mileage that is is good shape and build it up from there? rather than tearing down a brand new bike