The first thing you say is that you are a plumber. The work is a relatively stable job. If you're good at it, you'll learn. And then get a few credentials and then a little work experience when a qualified engineer is not a problem. And relatively speaking, the future of the way out of the job is blue-collar. Work to where there is no need to worry. The salary is also relatively stable.
If you go to the site as a supervisor. This work looks at the son of leisure. But the office has a certain risk. There is a problem with the wrong question. That's you. And the construction side and the construction side are recognized or friends more or less some relations. You in the management is also some pressure. No matter can not. Management it and have to be above say some of your not. But the square development prospects to be more optimistic. But this industry you have to be proficient in too much. Not only in the technology must first say is a glance to know how a situation. In the people dealing with things. Also up and down the relationship and the construction side of the speech and behavior can keep up. Quite a workout. When you get a few more qualifications you can slowly grow and upgrade. If and match clampman than your face is quite wide. There are more people to deal with. You'll be treated much better than a plumber. The first thing you need to do is to get a good deal on the job, and you'll be able to get a good deal.
So it's up to you to choose. I put your good and bad. And the development of some of the advantages and disadvantages and you said. You think about it yourself. Look at your character and your hobbies to decide. We don't know you. You should know better than us which one you are suitable for.