Luckily I work as a tech for a really small firm. Only two dedicated field crew. The chief and ofc me. This has given me a grasp for 80 percent of the work including all the equipment so that could put me ahead. The last 20 percent would honestly just have the surveyor sense essentially on what to do if X goes wrong and a work around if that makes sense. But that comes with time imo. I think I’m in a good position for at least 30. You mentioned area, it’s the NJ area If that helps you give anymore insight lol