Activity for FutureMIW

Im a professor at the college that me and my fiancé graduated from. Would it be super tacky to get engagement pictures taken on campus. The campus is in East Texas and it really is stunning! Thoughts?

Is it rude or silly to use two different photographers, one for the engagement photos and another for the wedding?

How do you find a photographer, a caterer, and the like? Do you just look at reviews online, or personally meet with them all? Do you just ask people for suggestions? HELP! I have no clue what I'm doing.