<p>You sound sure and clear and self aware. That’s great! </p>
<p>Having access to CAD programs is a good thing too. Maybe you could teach yourself Rhino or Solidworks. (Check out online instruction - lynda or somewhere else)</p>
<p>You have a good list to start and yes, you will want to narrow it down. Do you have a specific area of ID that you are interested in?</p>