I would say machining and take some welding courses while you are there. Math sucks. Thats why I dropped engineering in favor of business. Where do you plan on working is the question? You probably aren't gonna get hired as a bling bling fabricator strait out of school. You are gonna have to be in the trade a while to gain some experience and some sort of good work history before you are bending up tube and roll cages at some sort of shop