17M in West GA trying to plan my path into the trade before I turn 18. Looking for some real-world advice.

Hey everyone,

I’m 17, located in West Georgia, and trying to map out my best route into the trade. My goal is to go straight into work—specifically aiming for entry-level utility positions like Georgia Power's internal training program or a local EMC—and I want to skip college/line school entirely.

I know I can't officially apply to Georgia Power, get hired full-time, or sit for the official EEI CAST test until I turn 18 and have my Class A CDL. However, I’m currently grinding through CAST practice tests and study guides so I’m ready the day I turn 18, and I want to use this time to get ahead instead of sitting around waiting.

I have a few specific questions for the hands on here:

1. What else should I actually be learning right now? Aside from passing the CAST test and building mechanical aptitude, is there specific math, basic electrical theory, or tool identification I can study ahead of time?
2. OSHA 10: I’ve read mixed things. Some places teach it in-house during training, while others say having an OSHA 10 ETD card helps. Since Georgia Power handles OSHA certifications during their onboarding, is there any reason for me to pay out of pocket to do it on my own beforehand?
3. Extracurriculars: Does stuff like rock climbing or getting an EMT cert actually carry any weight on utility applications, or am I better off just focusing on general physical fitness, stamina, and basic hand tool familiarity?
4. Preparing for the hiring process: For those who went the direct utility route with Georgia Power or a local EMC in West GA, what else can I do before turning 18 to make my application stand out against hundreds of others?