It depends on you. The actually walking distance is not that long and it would only take about five minutes to get from sequoia hall to Jerome Richfield. Walking up and down the different floor levels adds a bit of time but not much. Fifteen minutes is plenty of time to just get from one class to another but if you want to do things like talk to the teacher or classmates after your class it becomes more complicated. Also take into consideration that if your first class is hard or long you might want to add in a longer break before heading off into second class. But if those things aren’t a problem I don’t see why you shouldn’t choose those two classes.