While I strongly support the skilled trades, if you are seriously trying to get into a military academy, I'd recommend keeping with a class load that is as rigorous as possible.
Also, I was just looking at the websites for the two US Senators from Idaho. If you are not familiar with the application process, I recommend you look at their sites, as soon as possible. You can ask each one for a nomination. You can also ask the US Representative from your district. You can apply to all 4 academies. Apparently, the academies host some sort of summer informational program. You may want to look into that as well. If I am reading it correctly (I could be wrong!) it appears that you need to submit your application to the Senators between March of your Junior Year and November of your Senior Year, with various deadlines in between.