Again like other people have said in another post, make this decision on your own. Not marching because of your parents is a decision you may regret. Don't let engineering be a negative for you. Our drum major was an engineering major, and many other people were pursuing tough degrees. I say audition where you want and wherever your means will allow. Go and even if you don't make it you will received valuable information that can be used in upcoming camps or future years. Get the experience and just soak it all up. Saving up by means of a job is always a good thing, and sponsorships will be discussed at camps and any other fundraising opportunities that corps has. Best of luck and keep working!