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And how exactly would I go about putting myself in position that doesn't look like I am running away?
The town where I planned to move to offers me the opportunity to become an EA
That's good. Sounds like a well thought out plan. Sounds like your Dad is going through, (early) Empty nest syndrome.
Your not trying to figure out "how to leave home without your fathers permission".
No longer focus on the past. Get excited about your goals, becoming an EA, Going on an adventure, entering a training program etc...Make up stuff if you have too.
This is your life, it is your new beginning. Allow your parents (and others) to draw off your energy. In other words, don't draw a path of moving out (with or without Dads permission). Involve your parents with apartment hunting, ask questions. Let them know that you will need help (in fact you should understand that you will indeed need help).