What is your priority?
Your start indicates that you want to retire, then you list that you want to change careers, then you mention expensive hobby (cars / working on cars), international travel, then that you want to own a home to work on cars.
Despite all of this, there is no mention about a significant other or a plan to get one eventually, kids ever?
Eventually, all of this possible, but what do you want to achieve first?
Also - what is your current income... that impacts timeline and alternative career options, both?