Even though it didn't originate in HW, if they changed the story up just a little bit, you could have it be a job that starts at 30 just like the HW jobs. You could also remove the prereq that you have a job at 50. It would be weird, but it would finally split the SCH and SMN jobs from the same XP track, which I'm sure a lot of people love, but it does make it the very odd job/class out.
An alternative would be to give it an alternative class (a new one) to start from but that's a ton more work.
Can't change titles (but it should read ACN)