Maybe silver if that is literally the only thing you're good at and you really are bronze in every other regard, and even then you do see the occasional mechanically super gifted but super bronze in other regards person grumbling about how they're stuck.
That said, I don't think it's actually possible to cs like a master player while being bronze in all other regards, since bronze in all other regards means dying a lot and hence not csing. If you focus on mastering one champion and perfecting your csing (which is probably a good idea), most people will naturally pick up enough overall game sense and decision making to be not all around bronze outside of csing.
edit: Also, I hope you're not suggesting you're anywhere near master level csing yourself. Your best game in the past week is around what I'd consider average for master level csing, and your average I'd consider to be gold-ish.