Yes and no, it's good because it's easy work so you're not worrying about other aspects of the job and can just get on with it. But also depending on where you work there might not be anywhere where you'll have a difficult maneuver to test your skills. (Not really a bad thing) I did a lot of trunking when I first got my class 1 with some multidrop. Just found one day everything made sense. I'd focus more on getting a job you feel comfortable in and suits you. The experience will follow 👍
We'd need to know the nature of your PTSD before suggesting if it's suitable or not. If it's because you were hit by a truck whilst crossing the road for example, I'd probably say no.