PT will barely pay you more than the union job at the end of the day. Not in this part of the world anyway.
My wife is a personal trainer at a physical therapy shop. Some of the PT do personal training at lunch and after work to try and make enough to get by.
Go back to school and do g4p porn on the side. Your seniority isn't great at the job. One decent sized layoff and you'll be in the unemployment line. A pt is a lot more prestigious than a warehouse worker. Also is part time school an option? Or online. Also I know the whole on call scenario as I'm living it everyday at my job but I love what I do. Hang I. There and do what's best for all of you.