It really depends on the trimester. In some cases you will de Monday through Saturday or Tuesday through Saturday. In other cases Monday through Thursday or Friday. You are looking at a schedule from 5 till 10pm.
Ok... Just be prepare for a "bit" of crisis each trimester for registration. That's because the nursing administration needs to make your registration manually and as you have seen, they are not good at organization. Other than that you'll be ok.
In regards of the accreditation, I doubrt they'll loose it. If you get pass the little things everyone complaints, which are the same things that happens in every University, you'll see the program is good. One of the things I would change is that I would hire more professors and offer English nursing classes during the day and not only at night. You need as a group to fight that.
In regards to the NCLEX, you can get your RN ADN license through Winsconsin as I said before, and then transfer it to any state you are going to work. After you finish your BSN, the state board in which gave you your license "Winsconsin" changes the classification from ADN to BSN. You don't have to take the exam again.
I started in August 2008 and will finish the 30 of May 2010. That's the accelerate program if you have another bachellors degree or your general ed courses completed. If you don't have the general education courses, It will take almost 3 years. Also, it's a combined science program. That means the biology, chemistry, anatomy & physiology courses are complemented in the medical surgerie classes. These are the most difficult ones, they are 2 and take 8 hours a week "only the classes", so that's a 6-10pm class 2 times per week.