Idk if it’s worth investing all that money in going to sea for maybe a month before you go to school. If you get to one of the state schools and realize going to sea isn’t for you they have other majors. At Mass it’s as easy as walking into the registrars office and saying “I wanna go business instead.”
15 days of classes, $3,000, trying to cram that in during your last summer of high school and then having to deal with union halls all while looking for a short term gig is a lot. My advice would be that if you think this is something you want to do, apply to the schools, give deck/engine a shot and if it doesn’t work out just switch to a non license major. And if it really doesn’t work out, knock out as many gen eds as you can in the semester or two that you’re there and transfer. Not the end of the world.
It’s also tough to find a job freshman year (at least at mass) because your hours are restricted so you’re going to want to save as much money as you can to get you through the first semester or two. Unless you’re eligible for work study programs but that gets into what your financial situation is and I’d rather not open another can of worms on this thread.