Campus Visit Advice

My son is a junior interested in engineering and honors program and housing. We are thinking of visiting campus March 25-27. Is it too early to contact the school to set up date, tours, etc. I have to thank mom2collegekids, all of your posts have put this school on our radar and we are hoping son loves his visit. He is undecided on college major within engineering so he is also considering a summer program like SITE.