As far as competition, I think that as long as you have a good GPA, CCRN etc you may get an interview. How you do in the interview will be the determining factor of getting accepted. I know the tuition is crazy (90K in-state and 136K out of state) for the program. Once accepted, you can live in graduate housing (~1100/month in North campus) or you can find somewhere cheaper. North campus is safer than south campus and you pay for what you get. They lose about 1 student per class not due to failing but rather the student finding that becoming a CRNA was not for them. Getting in is the hardest part of the program.
UB is good in that they are not out to get you or make you fail. They will work with you to make sure you pass. You will learn a lot from your clinical sites and majority of the places are good. With that said, it is a self-taught program and that can be frustration especially since you are paying a high tuition. PM me if you have any more questions.