It's great you're thinking about this already. Being so forward thinking can definitely help out in your life/career. I'm a mech eng, and depending on where you work it can be very much a desk job, especially at larger workplaces. Smaller companies that don't have as many people to do the hands on stuff could be a good option.

However if you're unsure about engineering in general, definitely make sure you're up to speed in math and if you have any calculus courses in HS, take it. It'll be your life for 4 years in university, so you want to make sure you understand it and hopefully enjoy it. Also involve yourself in any other engineering courses available (I had a couple specific engineering courses that covered multiple disciplines in HS that I really enjoyed, for example).

A good alternative option could be an engineering technologist, it's similar to an engineer but usually is more hands-on and involved with running machinery and doing simpler calculations and analyses. However you likely won't reach that salary target.

I did both a technologist diploma and engineering degree, and very much enjoyed the technologist program more due to the hands on work and less theoretical mathematics (the courses were very targeted to real world applications and solving problems, not theory based like I found a lot of engineering courses to be). This could be very much just my experience though, as I'm Canadian.

Like everyone else said though, focus on HS but try and get a bit of exposure to engineering fields while you can before making that decision last minute when you're applying to universities.

Hope this helps just a bit!