You might have already started, but if I were you and were looking to move on to a different job I would write the first half of the first while you are looking. That would give you a good idea how much work is involved in getting the first and you might not want to continue, and if you did end up getting the first half you would have a major leg up on other second class guys which might help land the job where you can get first class time in. Plus look into your company's policies as they might pay for schooling/books/courses that you could use to further your education, which might help get a first class plant job. But don't tell them that!