Vanderbilt has a very high graduation in four year rate. No worries. You can check the Common Data Set at most college websites to sift through stats like this or see them at USNW Reports.
There is no prob getting classes at Vanderbilt in a reasonable time frame and sequence. No one worries that five years are required here. Example of one unexpected expense, Vandy has a policy (a fine policy) that allows you to retake a class where you do not like your grade one time. There are students who might pay for a class like Organic Chem or Calculus twice which can add to expenses, particularly if this is done in summer or May sessions. Both grades appear on your transcript. The second grade is the one factored into your GPA. Not all schools address things this way. If you drop a class and underload for any reason, you might have to do a summer or May session or you might not. These one step forward two steps back things do happen at Vandy but in general everyone gets it done in four years. I do recall an engineering student who did five years to get a masters in engineering.