Choose according to the requirements of the school, and your preferences. It shouldn’t make any difference in future hiring.
Yes, some scholarships would be paid directly to your school, and reduce your need, and hence reduce fin aid. But many small, local scholarships are paid directly to you. I’d imagine that you need to report them as income on your taxes, and so it might affect your fin need/aid two years hence, but it’s still worth it to get as many as you can. The more awards you win, the easier it is to win subsequent ones, and the money you win for junior and senior years won’t affect your fin aid/need, since they look at the tax return from two years prior.