Yes I would definitely do it! It's so stressful to know you're in the program but having to wait for your blue card to get in on time! Mine finally came two days ago! Plus if you get a call at the last minute you will be prepared!
I got in I am taking some of my classes now and officially start in August. I hope you hear from them soon!! I guess Brenham is different. I can't really see the harm of letting you know if one or several people are ahead of you.