I would skip the math minor for other electives. (I should say I DID skip a math minor . .. would of had that w/ one more math) Anyway, the Catia will help you get a job, but will be short-lived knowlege. If you can take both structures and composites you'll have a nice balance. (everyone knows engineer can do math . . a math minor isn't going to do squat for you ... unless you want some dull job in a QC dept doing statistical analysis -- you can thank me later