CSULB undeclared to nursing major?

Hi, should I attend csulb as an undeclared major if I cant get in with a pre-nursing major or should I attend a CC first and then transfer into csulb’s BSN program? Has anyone had experience or know how hard it would be to get declare a nursing major once attending in csulb? I know there are certain pre reqs to do and its supposedly the same going in undeclared vs pre-nursing but how true is that… Anyone with knowledge or similar experience would be of great help!
And yes, everyone knows csulb is the “best nursing school” and “most impacted/most difficult to get into”, the average gpa for anyone getting into the program is 3.6 and probably increases each year.